38406885 has 32 divisors (see below), whose sum is σ = 70571520. Its totient is φ = 17640000.

The previous prime is 38406883. The next prime is 38406899. The reversal of 38406885 is 58860483.

It is not a de Polignac number, because 38406885 - 2¹ = 38406883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38406883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2991 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (2205360).

Almost surely, 2^38406885 is an apocalyptic number.

It is an amenable number.

38406885 is a deficient number, since it is larger than the sum of its proper divisors (32164635).

38406885 is a wasteful number, since it uses less digits than its factorization.

38406885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12289.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 38406885 is about 6197.3288600816. The cubic root of 38406885 is about 337.3932282279.

The spelling of 38406885 in words is "thirty-eight million, four hundred six thousand, eight hundred eighty-five".