139213165 has 48 divisors (see below), whose sum is σ = 211725360. Its totient is φ = 87091200.

The previous prime is 139213159. The next prime is 139213183. The reversal of 139213165 is 561312931.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4351396 + 134861769 = 2086^2 + 11613^2 .

It is not a de Polignac number, because 139213165 - 2⁹ = 139212653 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 346965 + ... + 347365.

It is an arithmetic number, because the mean of its divisors is an integer number (4410945).

Almost surely, 2^139213165 is an apocalyptic number.

It is an amenable number.

139213165 is a deficient number, since it is larger than the sum of its proper divisors (72512195).

139213165 is a wasteful number, since it uses less digits than its factorization.

139213165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 535 counting only the distinct ones).

The product of its digits is 4860, while the sum is 31.

The square root of 139213165 is about 11798.8628689378. The cubic root of 139213165 is about 518.2748115698.

The spelling of 139213165 in words is "one hundred thirty-nine million, two hundred thirteen thousand, one hundred sixty-five".