139072365 has 12 divisors (see below), whose sum is σ = 241058844. Its totient is φ = 74171904.

The previous prime is 139072361. The next prime is 139072397. The reversal of 139072365 is 563270931.

It can be written as a sum of positive squares in 2 ways, for example, as 61121124 + 77951241 = 7818^2 + 8829^2 .

It is not a de Polignac number, because 139072365 - 2² = 139072361 is a prime.

It is a super-2 number, since 2×139072365² = 38682245413386450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139072361) 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, 1545204 + ... + 1545293.

It is an arithmetic number, because the mean of its divisors is an integer number (20088237).

Almost surely, 2^139072365 is an apocalyptic number.

139072365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139072365 is a deficient number, since it is larger than the sum of its proper divisors (101986479).

139072365 is a wasteful number, since it uses less digits than its factorization.

139072365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090508 (or 3090505 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 139072365 is about 11792.8946828164. The cubic root of 139072365 is about 518.1000251576.

The spelling of 139072365 in words is "one hundred thirty-nine million, seventy-two thousand, three hundred sixty-five".