38394657 has 24 divisors (see below), whose sum is σ = 64860224. Its totient is φ = 21428064.

The previous prime is 38394623. The next prime is 38394667. The reversal of 38394657 is 75649383.

It is not a de Polignac number, because 38394657 - 2⁷ = 38394529 is a prime.

It is a super-2 number, since 2×38394657² = 2948299372295298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38394607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4378 + ... + 9795.

Almost surely, 2^38394657 is an apocalyptic number.

It is an amenable number.

38394657 is a deficient number, since it is larger than the sum of its proper divisors (26465567).

38394657 is a wasteful number, since it uses less digits than its factorization.

38394657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14229 (or 14226 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 38394657 is about 6196.3422274758. The cubic root of 38394657 is about 337.3574179618.

The spelling of 38394657 in words is "thirty-eight million, three hundred ninety-four thousand, six hundred fifty-seven".