138839295 has 48 divisors (see below), whose sum is σ = 260932320. Its totient is φ = 62850816.

The previous prime is 138839279. The next prime is 138839299. The reversal of 138839295 is 592938831.

It is a happy number.

138839295 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 138839295 - 2⁴ = 138839279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138839299) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79249 + ... + 80981.

It is an arithmetic number, because the mean of its divisors is an integer number (5436090).

Almost surely, 2^138839295 is an apocalyptic number.

138839295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138839295 is a deficient number, since it is larger than the sum of its proper divisors (122093025).

138839295 is a wasteful number, since it uses less digits than its factorization.

138839295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864 (or 1857 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 138839295 is about 11783.0087414039. The cubic root of 138839295 is about 517.8104370900.

The spelling of 138839295 in words is "one hundred thirty-eight million, eight hundred thirty-nine thousand, two hundred ninety-five".