38564999 has 18 divisors (see below), whose sum is σ = 43637832. Its totient is φ = 34049400.

The previous prime is 38564971. The next prime is 38565011. The reversal of 38564999 is 99946583.

It is not a de Polignac number, because 38564999 - 2¹⁶ = 38499463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38564999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38564599) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 543134 + ... + 543204.

It is an arithmetic number, because the mean of its divisors is an integer number (2424324).

Almost surely, 2^38564999 is an apocalyptic number.

38564999 is a deficient number, since it is larger than the sum of its proper divisors (5072833).

38564999 is an equidigital number, since it uses as much as digits as its factorization.

38564999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 149 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 53.

The square root of 38564999 is about 6210.0723828310. The cubic root of 38564999 is about 337.8555893719.

The spelling of 38564999 in words is "thirty-eight million, five hundred sixty-four thousand, nine hundred ninety-nine".