139807980 has 72 divisors (see below), whose sum is σ = 456713712. Its totient is φ = 34413696.

The previous prime is 139807979. The next prime is 139807981. The reversal of 139807980 is 89708931.

It is an interprime number because it is at equal distance from previous prime (139807979) and next prime (139807981).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (139807981) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 27534 + ... + 32213.

It is an arithmetic number, because the mean of its divisors is an integer number (6343246).

Almost surely, 2^139807980 is an apocalyptic number.

139807980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139807980 is an abundant number, since it is smaller than the sum of its proper divisors (316905732).

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

139807980 is a wasteful number, since it uses less digits than its factorization.

139807980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59775 (or 59770 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 139807980 is about 11824.0424559454. The cubic root of 139807980 is about 519.0119056821.

The spelling of 139807980 in words is "one hundred thirty-nine million, eight hundred seven thousand, nine hundred eighty".