139973320 has 16 divisors (see below), whose sum is σ = 314940060. Its totient is φ = 55989312.

The previous prime is 139973263. The next prime is 139973321. The reversal of 139973320 is 23379931.

It can be written as a sum of positive squares in 2 ways, for example, as 123343236 + 16630084 = 11106^2 + 4078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139973320.

It is not an unprimeable number, because it can be changed into a prime (139973321) 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 3 ways as a sum of consecutive naturals, for example, 1749627 + ... + 1749706.

Almost surely, 2^139973320 is an apocalyptic number.

139973320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139973320 is an abundant number, since it is smaller than the sum of its proper divisors (174966740).

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

139973320 is a wasteful number, since it uses less digits than its factorization.

139973320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3499344 (or 3499340 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 139973320 is about 11831.0320767040. The cubic root of 139973320 is about 519.2164233889.

The spelling of 139973320 in words is "one hundred thirty-nine million, nine hundred seventy-three thousand, three hundred twenty".