138517299 has 12 divisors (see below), whose sum is σ = 200613400. Its totient is φ = 92098944.

The previous prime is 138517297. The next prime is 138517349. The reversal of 138517299 is 992715831.

It is not a de Polignac number, because 138517299 - 2¹ = 138517297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138517297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16894 + ... + 23715.

Almost surely, 2^138517299 is an apocalyptic number.

138517299 is a deficient number, since it is larger than the sum of its proper divisors (62096101).

138517299 is a wasteful number, since it uses less digits than its factorization.

138517299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40994 (or 40991 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 138517299 is about 11769.3372370750. The cubic root of 138517299 is about 517.4098253577.

The spelling of 138517299 in words is "one hundred thirty-eight million, five hundred seventeen thousand, two hundred ninety-nine".