139672608 has 48 divisors (see below), whose sum is σ = 378475776. Its totient is φ = 45054720.

The previous prime is 139672573. The next prime is 139672619. The reversal of 139672608 is 806276931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 139672608.

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, 20491 + ... + 26442.

It is an arithmetic number, because the mean of its divisors is an integer number (7884912).

Almost surely, 2^139672608 is an apocalyptic number.

It is an amenable number.

139672608 is an abundant number, since it is smaller than the sum of its proper divisors (238803168).

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

139672608 is a wasteful number, since it uses less digits than its factorization.

139672608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46977 (or 46969 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 139672608 is about 11818.3166313989. The cubic root of 139672608 is about 518.8443368764.

The spelling of 139672608 in words is "one hundred thirty-nine million, six hundred seventy-two thousand, six hundred eight".