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379898905 = 5169744773
BaseRepresentation
bin10110101001001…
…100110000011001
3222110211212022211
4112221030300121
51234223231110
6101410315121
712262041661
oct2651146031
9873755284
10379898905
11185496741
12a7288aa1
1360924169
14386511a1
152354298a
hex16a4cc19

379898905 has 8 divisors (see below), whose sum is σ = 456157512. Its totient is φ = 303733248.

The previous prime is 379898887. The next prime is 379898923. The reversal of 379898905 is 509898973.

It is an interprime number because it is at equal distance from previous prime (379898887) and next prime (379898923).

It can be written as a sum of positive squares in 4 ways, for example, as 160503561 + 219395344 = 12669^2 + 14812^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 379898905 - 25 = 379898873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 379898905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13902 + ... + 30871.

It is an arithmetic number, because the mean of its divisors is an integer number (57019689).

Almost surely, 2379898905 is an apocalyptic number.

It is an amenable number.

379898905 is a deficient number, since it is larger than the sum of its proper divisors (76258607).

379898905 is a wasteful number, since it uses less digits than its factorization.

379898905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46475.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The square root of 379898905 is about 19490.9954850952. The cubic root of 379898905 is about 724.2514064630.

The spelling of 379898905 in words is "three hundred seventy-nine million, eight hundred ninety-eight thousand, nine hundred five".

Divisors: 1 5 1697 8485 44773 223865 75979781 379898905