38857539 has 24 divisors (see below), whose sum is σ = 62220288. Its totient is φ = 21485520.

The previous prime is 38857531. The next prime is 38857541. The reversal of 38857539 is 93575883.

It is a happy number.

It is not a de Polignac number, because 38857539 - 2³ = 38857531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38857531) 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, 294 + ... + 8820.

It is an arithmetic number, because the mean of its divisors is an integer number (2592512).

Almost surely, 2^38857539 is an apocalyptic number.

38857539 is a deficient number, since it is larger than the sum of its proper divisors (23362749).

38857539 is a wasteful number, since it uses less digits than its factorization.

38857539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575 (or 8568 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 38857539 is about 6233.5815547725. The cubic root of 38857539 is about 338.7077213794.

The spelling of 38857539 in words is "thirty-eight million, eight hundred fifty-seven thousand, five hundred thirty-nine".