139299507 has 56 divisors (see below), whose sum is σ = 224283600. Its totient is φ = 86220288.

The previous prime is 139299497. The next prime is 139299533. The reversal of 139299507 is 705992931.

It is a happy number.

139299507 is a `hidden beast` number, since 139 + 2 + 9 + 9 + 507 = 666.

It is not a de Polignac number, because 139299507 - 2⁴ = 139299491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139299007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1232683 + ... + 1232795.

Almost surely, 2^139299507 is an apocalyptic number.

139299507 is a deficient number, since it is larger than the sum of its proper divisors (84984093).

139299507 is an equidigital number, since it uses as much as digits as its factorization.

139299507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 139299507 is about 11802.5212137068. The cubic root of 139299507 is about 518.3819365812.

It can be divided in two parts, 13929 and 9507, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 139299507 in words is "one hundred thirty-nine million, two hundred ninety-nine thousand, five hundred seven".