938865408 has 144 divisors (see below), whose sum is σ = 2708676096. Its totient is φ = 286986240.

The previous prime is 938865383. The next prime is 938865463. The reversal of 938865408 is 804568839.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705491 + ... + 2705837.

Almost surely, 2^938865408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938865408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1354338048).

938865408 is an abundant number, since it is smaller than the sum of its proper divisors (1769810688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

938865408 is a wasteful number, since it uses less digits than its factorization.

938865408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The square root of 938865408 is about 30640.9106914269. The cubic root of 938865408 is about 979.1918257253.

The spelling of 938865408 in words is "nine hundred thirty-eight million, eight hundred sixty-five thousand, four hundred eight".