139325913 has 20 divisors (see below), whose sum is σ = 213210228. Its totient is φ = 90616320.

The previous prime is 139325899. The next prime is 139325933. The reversal of 139325913 is 319523931.

139325913 is a `hidden beast` number, since 1 + 39 + 32 + 591 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24235929 + 115089984 = 4923^2 + 10728^2 .

It is not a de Polignac number, because 139325913 - 2¹⁴ = 139309529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139325933) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17656 + ... + 24297.

Almost surely, 2^139325913 is an apocalyptic number.

It is an amenable number.

139325913 is a deficient number, since it is larger than the sum of its proper divisors (73884315).

139325913 is an equidigital number, since it uses as much as digits as its factorization.

139325913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42006 (or 41997 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 139325913 is about 11803.6398199877. The cubic root of 139325913 is about 518.4146898165.

The spelling of 139325913 in words is "one hundred thirty-nine million, three hundred twenty-five thousand, nine hundred thirteen".