139618968 has 32 divisors (see below), whose sum is σ = 349392960. Its totient is φ = 46493600.

The previous prime is 139618951. The next prime is 139619003. The reversal of 139618968 is 869816931.

It is a self number, because there is not a number n which added to its sum of digits gives 139618968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29143 + ... + 33593.

It is an arithmetic number, because the mean of its divisors is an integer number (10918530).

Almost surely, 2^139618968 is an apocalyptic number.

It is an amenable number.

139618968 is an abundant number, since it is smaller than the sum of its proper divisors (209773992).

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

139618968 is a wasteful number, since it uses less digits than its factorization.

139618968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767 (or 5763 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 139618968 is about 11816.0470547472. The cubic root of 139618968 is about 518.7779092160. Note that the first 3 decimals are identical.

The spelling of 139618968 in words is "one hundred thirty-nine million, six hundred eighteen thousand, nine hundred sixty-eight".