139835912 has 64 divisors (see below), whose sum is σ = 283575600. Its totient is φ = 64512000.

The previous prime is 139835911. The next prime is 139835921. The reversal of 139835912 is 219538931.

It can be written as a sum of positive squares in 8 ways, for example, as 16048036 + 123787876 = 4006^2 + 11126^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 139835912.

It is not an unprimeable number, because it can be changed into a prime (139835911) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 580112 + ... + 580352.

Almost surely, 2^139835912 is an apocalyptic number.

It is an amenable number.

139835912 is an abundant number, since it is smaller than the sum of its proper divisors (143739688).

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

139835912 is a wasteful number, since it uses less digits than its factorization.

139835912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 374 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 139835912 is about 11825.2235496840. The cubic root of 139835912 is about 519.0464675509.

The spelling of 139835912 in words is "one hundred thirty-nine million, eight hundred thirty-five thousand, nine hundred twelve".