139438968 has 32 divisors (see below), whose sum is σ = 350946000. Its totient is φ = 46166528.

The previous prime is 139438939. The next prime is 139438969. The reversal of 139438968 is 869834931.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 139438968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139438969) 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, 15921 + ... + 23072.

Almost surely, 2^139438968 is an apocalyptic number.

It is an amenable number.

139438968 is an abundant number, since it is smaller than the sum of its proper divisors (211507032).

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

139438968 is a wasteful number, since it uses less digits than its factorization.

139438968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39151 (or 39147 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 139438968 is about 11808.4278377776. The cubic root of 139438968 is about 518.5548731845.

The spelling of 139438968 in words is "one hundred thirty-nine million, four hundred thirty-eight thousand, nine hundred sixty-eight".