139137914 has 8 divisors (see below), whose sum is σ = 208784628. Its totient is φ = 69543040.

The previous prime is 139137899. The next prime is 139137923. The reversal of 139137914 is 419731931.

It can be written as a sum of positive squares in 2 ways, for example, as 102353689 + 36784225 = 10117^2 + 6065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×139137914² = 38718718224542792, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 5357 + ... + 17520.

Almost surely, 2^139137914 is an apocalyptic number.

139137914 is a deficient number, since it is larger than the sum of its proper divisors (69646714).

139137914 is a wasteful number, since it uses less digits than its factorization.

139137914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25920.

The product of its digits is 20412, while the sum is 38.

The square root of 139137914 is about 11795.6735288834. The cubic root of 139137914 is about 518.1814110949.

The spelling of 139137914 in words is "one hundred thirty-nine million, one hundred thirty-seven thousand, nine hundred fourteen".