938440799 has 6 divisors (see below), whose sum is σ = 990432360. Its totient is φ = 889048836.

The previous prime is 938440787. The next prime is 938440829. The reversal of 938440799 is 997044839.

It is a happy number.

It is not a de Polignac number, because 938440799 - 2⁸ = 938440543 is a prime.

It is a super-2 number, since 2×938440799² = 1761342266455516802, which contains 22 as substring.

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 938440799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938440709) 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, 1299419 + ... + 1300140.

It is an arithmetic number, because the mean of its divisors is an integer number (165072060).

Almost surely, 2^938440799 is an apocalyptic number.

938440799 is a deficient number, since it is larger than the sum of its proper divisors (51991561).

938440799 is a wasteful number, since it uses less digits than its factorization.

938440799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599597 (or 2599578 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 938440799 is about 30633.9811157479. The cubic root of 938440799 is about 979.0441878235.

The spelling of 938440799 in words is "nine hundred thirty-eight million, four hundred forty thousand, seven hundred ninety-nine".