138937707 has 8 divisors (see below), whose sum is σ = 205833680. Its totient is φ = 92625120.

The previous prime is 138937679. The next prime is 138937727. The reversal of 138937707 is 707739831.

It is not a de Polignac number, because 138937707 - 2¹⁶ = 138872171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138937727) 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, 2572894 + ... + 2572947.

It is an arithmetic number, because the mean of its divisors is an integer number (25729210).

Almost surely, 2^138937707 is an apocalyptic number.

138937707 is a deficient number, since it is larger than the sum of its proper divisors (66895973).

138937707 is an equidigital number, since it uses as much as digits as its factorization.

138937707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145850 (or 5145844 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 138937707 is about 11787.1840148527. The cubic root of 138937707 is about 517.9327529067.

The spelling of 138937707 in words is "one hundred thirty-eight million, nine hundred thirty-seven thousand, seven hundred seven".