38664387 has 6 divisors (see below), whose sum is σ = 55848572. Its totient is φ = 25776252.

The previous prime is 38664361. The next prime is 38664389. The reversal of 38664387 is 78346683.

It is not a de Polignac number, because 38664387 - 2¹² = 38660291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38664389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2148013 + ... + 2148030.

Almost surely, 2^38664387 is an apocalyptic number.

38664387 is a deficient number, since it is larger than the sum of its proper divisors (17184185).

38664387 is a wasteful number, since it uses less digits than its factorization.

38664387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296049 (or 4296046 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 38664387 is about 6218.0693949167. The cubic root of 38664387 is about 338.1455758665.

The spelling of 38664387 in words is "thirty-eight million, six hundred sixty-four thousand, three hundred eighty-seven".