139165139 has 12 divisors (see below), whose sum is σ = 147401280. Its totient is φ = 131369040.

The previous prime is 139165123. The next prime is 139165141. The reversal of 139165139 is 931561931.

It is not a de Polignac number, because 139165139 - 2⁴ = 139165123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139165189) 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, 139934 + ... + 140924.

It is an arithmetic number, because the mean of its divisors is an integer number (12283440).

Almost surely, 2^139165139 is an apocalyptic number.

139165139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

139165139 is a deficient number, since it is larger than the sum of its proper divisors (8236141).

139165139 is an equidigital number, since it uses as much as digits as its factorization.

139165139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1399 counting only the distinct ones).

The product of its digits is 21870, while the sum is 38.

The square root of 139165139 is about 11796.8274972554. The cubic root of 139165139 is about 518.2152062662.

The spelling of 139165139 in words is "one hundred thirty-nine million, one hundred sixty-five thousand, one hundred thirty-nine".