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379061869 = 1761365537
BaseRepresentation
bin10110100110000…
…000011001101101
3222102021100010111
4112212000121231
51234014434434
6101340340021
712251654434
oct2646003155
9872240114
10379061869
11184a7487a
12a6b44611
13606c0184
14384b411b
1523429964
hex1698066d

379061869 has 8 divisors (see below), whose sum is σ = 407940408. Its totient is φ = 350914560.

The previous prime is 379061863. The next prime is 379061897. The reversal of 379061869 is 968160973.

It can be written as a sum of positive squares in 4 ways, for example, as 8037225 + 371024644 = 2835^2 + 19262^2 .

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 379061869 - 213 = 379053677 is a prime.

It is a super-2 number, since 2×3790618692 = 287375801059546322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379061863) by changing a digit.

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, 181732 + ... + 183805.

It is an arithmetic number, because the mean of its divisors is an integer number (50992551).

Almost surely, 2379061869 is an apocalyptic number.

It is an amenable number.

379061869 is a deficient number, since it is larger than the sum of its proper divisors (28878539).

379061869 is a wasteful number, since it uses less digits than its factorization.

379061869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365615.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 379061869 is about 19469.5112676205. The cubic root of 379061869 is about 723.7190979356.

The spelling of 379061869 in words is "three hundred seventy-nine million, sixty-one thousand, eight hundred sixty-nine".

Divisors: 1 17 61 1037 365537 6214129 22297757 379061869