139373660 has 12 divisors (see below), whose sum is σ = 292684728. Its totient is φ = 55749456.

The previous prime is 139373657. The next prime is 139373671. The reversal of 139373660 is 66373931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3484322 + ... + 3484361.

It is an arithmetic number, because the mean of its divisors is an integer number (24390394).

Almost surely, 2^139373660 is an apocalyptic number.

139373660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139373660 is an abundant number, since it is smaller than the sum of its proper divisors (153311068).

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

139373660 is a wasteful number, since it uses less digits than its factorization.

139373660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6968692 (or 6968690 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 139373660 is about 11805.6622008255. The cubic root of 139373660 is about 518.4739033029.

The spelling of 139373660 in words is "one hundred thirty-nine million, three hundred seventy-three thousand, six hundred sixty".