5438399568 has 40 divisors (see below), whose sum is σ = 16056228288. Its totient is φ = 1553828352.

The previous prime is 5438399537. The next prime is 5438399591. The reversal of 5438399568 is 8659938345.

It is a super-2 number, since 2×5438399568² = 59152379722445173248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8092521 + ... + 8093192.

Almost surely, 2^5438399568 is an apocalyptic number.

It is an amenable number.

5438399568 is an abundant number, since it is smaller than the sum of its proper divisors (10617828720).

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

5438399568 is a wasteful number, since it uses less digits than its factorization.

5438399568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185731 (or 16185725 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 60.

The square root of 5438399568 is about 73745.5054088044. The cubic root of 5438399568 is about 1758.5593806993.

The spelling of 5438399568 in words is "five billion, four hundred thirty-eight million, three hundred ninety-nine thousand, five hundred sixty-eight".