139496631 has 8 divisors (see below), whose sum is σ = 187244400. Its totient is φ = 92373312.

The previous prime is 139496629. The next prime is 139496653. The reversal of 139496631 is 136694931.

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

It is not a de Polignac number, because 139496631 - 2¹ = 139496629 is a prime.

It is a super-2 number, since 2×139496631² = 38918620120700322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139496671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155590 + ... + 156483.

It is an arithmetic number, because the mean of its divisors is an integer number (23405550).

Almost surely, 2^139496631 is an apocalyptic number.

139496631 is a deficient number, since it is larger than the sum of its proper divisors (47747769).

139496631 is a wasteful number, since it uses less digits than its factorization.

139496631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312225.

The product of its digits is 104976, while the sum is 42.

The square root of 139496631 is about 11810.8691890140. The cubic root of 139496631 is about 518.6263436618.

The spelling of 139496631 in words is "one hundred thirty-nine million, four hundred ninety-six thousand, six hundred thirty-one".