1056938399 has 16 divisors (see below), whose sum is σ = 1240875936. Its totient is φ = 889497600.

The previous prime is 1056938371. The next prime is 1056938401. The reversal of 1056938399 is 9938396501.

It is a cyclic number.

It is not a de Polignac number, because 1056938399 - 2¹² = 1056934303 is a prime.

It is a super-2 number, since 2×1056938399² = 2234237558561366402, 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 1056938399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056938329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34922 + ... + 57735.

It is an arithmetic number, because the mean of its divisors is an integer number (77554746).

Almost surely, 2^1056938399 is an apocalyptic number.

1056938399 is a deficient number, since it is larger than the sum of its proper divisors (183937537).

1056938399 is a wasteful number, since it uses less digits than its factorization.

1056938399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92746.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 1056938399 is about 32510.5890288072. The cubic root of 1056938399 is about 1018.6302256015.

The spelling of 1056938399 in words is "one billion, fifty-six million, nine hundred thirty-eight thousand, three hundred ninety-nine".