38899431117 has 8 divisors (see below), whose sum is σ = 57628786880. Its totient is φ = 25932954060.

The previous prime is 38899431107. The next prime is 38899431121. The reversal of 38899431117 is 71113499883.

It is a happy number.

38899431117 is a `hidden beast` number, since 3 + 8 + 8 + 99 + 431 + 117 = 666.

38899431117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38899431117 - 2⁷ = 38899430989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38899431107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720359809 + ... + 720359862.

It is an arithmetic number, because the mean of its divisors is an integer number (7203598360).

Almost surely, 2^38899431117 is an apocalyptic number.

It is an amenable number.

38899431117 is a deficient number, since it is larger than the sum of its proper divisors (18729355763).

38899431117 is a wasteful number, since it uses less digits than its factorization.

38899431117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440719680 (or 1440719674 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The spelling of 38899431117 in words is "thirty-eight billion, eight hundred ninety-nine million, four hundred thirty-one thousand, one hundred seventeen".