385004691 has 16 divisors (see below), whose sum is σ = 574873600. Its totient is φ = 254646504.

The previous prime is 385004689. The next prime is 385004693. The reversal of 385004691 is 196400583.

It is an interprime number because it is at equal distance from previous prime (385004689) and next prime (385004693).

It is not a de Polignac number, because 385004691 - 2¹ = 385004689 is a prime.

It is a super-2 number, since 2×385004691² = 296457224184010962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385004693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52711 + ... + 59568.

It is an arithmetic number, because the mean of its divisors is an integer number (35929600).

Almost surely, 2^385004691 is an apocalyptic number.

385004691 is a deficient number, since it is larger than the sum of its proper divisors (189868909).

385004691 is a wasteful number, since it uses less digits than its factorization.

385004691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112415 (or 112409 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 385004691 is about 19621.5364077332. The cubic root of 385004691 is about 727.4815895012.

The spelling of 385004691 in words is "three hundred eighty-five million, four thousand, six hundred ninety-one".