139312495 has 16 divisors (see below), whose sum is σ = 199365120. Its totient is φ = 91374624.

The previous prime is 139312493. The next prime is 139312499. The reversal of 139312495 is 594213931.

It is a cyclic number.

It is not a de Polignac number, because 139312495 - 2¹ = 139312493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139312493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85725 + ... + 87334.

It is an arithmetic number, because the mean of its divisors is an integer number (12460320).

Almost surely, 2^139312495 is an apocalyptic number.

139312495 is a deficient number, since it is larger than the sum of its proper divisors (60052625).

139312495 is a wasteful number, since it uses less digits than its factorization.

139312495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173094.

The product of its digits is 29160, while the sum is 37.

The square root of 139312495 is about 11803.0714223036. The cubic root of 139312495 is about 518.3980470363.

The spelling of 139312495 in words is "one hundred thirty-nine million, three hundred twelve thousand, four hundred ninety-five".