138933099 has 12 divisors (see below), whose sum is σ = 200935696. Its totient is φ = 92504592.

The previous prime is 138933097. The next prime is 138933107. The reversal of 138933099 is 990339831.

It is not a de Polignac number, because 138933099 - 2¹ = 138933097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138933097) 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, 1972 + ... + 16785.

Almost surely, 2^138933099 is an apocalyptic number.

138933099 is a deficient number, since it is larger than the sum of its proper divisors (62002597).

138933099 is a wasteful number, since it uses less digits than its factorization.

138933099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19586 (or 19583 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 138933099 is about 11786.9885466984. The cubic root of 138933099 is about 517.9270269341.

The spelling of 138933099 in words is "one hundred thirty-eight million, nine hundred thirty-three thousand, ninety-nine".