139616634 has 16 divisors (see below), whose sum is σ = 279351072. Its totient is φ = 46519248.

The previous prime is 139616593. The next prime is 139616641. The reversal of 139616634 is 436616931.

It is a junction number, because it is equal to n+sod(n) for n = 139616592 and 139616601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21112 + ... + 26924.

It is an arithmetic number, because the mean of its divisors is an integer number (17459442).

Almost surely, 2^139616634 is an apocalyptic number.

139616634 is an abundant number, since it is smaller than the sum of its proper divisors (139734438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139616634 is a wasteful number, since it uses less digits than its factorization.

139616634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9821.

The product of its digits is 69984, while the sum is 39.

The square root of 139616634 is about 11815.9482903405. The cubic root of 139616634 is about 518.7750184092.

The spelling of 139616634 in words is "one hundred thirty-nine million, six hundred sixteen thousand, six hundred thirty-four".