139561796 has 12 divisors (see below), whose sum is σ = 266436240. Its totient is φ = 63437160.

The previous prime is 139561787. The next prime is 139561801. The reversal of 139561796 is 697165931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 139561796.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585886 + ... + 1585973.

It is an arithmetic number, because the mean of its divisors is an integer number (22203020).

Almost surely, 2^139561796 is an apocalyptic number.

It is an amenable number.

139561796 is a deficient number, since it is larger than the sum of its proper divisors (126874444).

139561796 is a wasteful number, since it uses less digits than its factorization.

139561796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171874 (or 3171872 counting only the distinct ones).

The product of its digits is 306180, while the sum is 47.

The square root of 139561796 is about 11813.6275546506. The cubic root of 139561796 is about 518.7070888006.

The spelling of 139561796 in words is "one hundred thirty-nine million, five hundred sixty-one thousand, seven hundred ninety-six".