38897817 has 24 divisors (see below), whose sum is σ = 60919776. Its totient is φ = 22010688.

The previous prime is 38897779. The next prime is 38897851. The reversal of 38897817 is 71879883.

It is not a de Polignac number, because 38897817 - 2⁶ = 38897753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38897817.

It is not an unprimeable number, because it can be changed into a prime (38897857) 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, 14493 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (2538324).

Almost surely, 2^38897817 is an apocalyptic number.

It is an amenable number.

38897817 is a deficient number, since it is larger than the sum of its proper divisors (22021959).

38897817 is a wasteful number, since it uses less digits than its factorization.

38897817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2590 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The square root of 38897817 is about 6236.8114449613. The cubic root of 38897817 is about 338.8247107628.

The spelling of 38897817 in words is "thirty-eight million, eight hundred ninety-seven thousand, eight hundred seventeen".