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380683973 = 478099659
BaseRepresentation
bin10110101100001…
…100011011000101
3222112022202020102
4112230030123011
51234423341343
6101435213445
712301521545
oct2654143305
9875282212
10380683973
1118598255a
12a75a7285
1360b3a5b7
14387b7325
152364a3b8
hex16b0c6c5

380683973 has 4 divisors (see below), whose sum is σ = 388783680. Its totient is φ = 372584268.

The previous prime is 380683967. The next prime is 380683993. The reversal of 380683973 is 379386083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379386083 = 1931965731.

It is a cyclic number.

It is not a de Polignac number, because 380683973 - 26 = 380683909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 8099659 = 380683973 / (3 + 8 + 0 + 6 + 8 + 3 + 9 + 7 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380683913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4049783 + ... + 4049876.

It is an arithmetic number, because the mean of its divisors is an integer number (97195920).

Almost surely, 2380683973 is an apocalyptic number.

It is an amenable number.

380683973 is a deficient number, since it is larger than the sum of its proper divisors (8099707).

380683973 is an equidigital number, since it uses as much as digits as its factorization.

380683973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099706.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 380683973 is about 19511.1243397196. The cubic root of 380683973 is about 724.7499561033.

The spelling of 380683973 in words is "three hundred eighty million, six hundred eighty-three thousand, nine hundred seventy-three".

Divisors: 1 47 8099659 380683973