139924980 has 72 divisors (see below), whose sum is σ = 457095912. Its totient is φ = 34442496.

The previous prime is 139924957. The next prime is 139924997. The reversal of 139924980 is 89429931.

139924980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6937956 + 132987024 = 2634^2 + 11532^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27559 + ... + 32238.

Almost surely, 2^139924980 is an apocalyptic number.

139924980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139924980 is an abundant number, since it is smaller than the sum of its proper divisors (317170932).

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

139924980 is a wasteful number, since it uses less digits than its factorization.

139924980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59825 (or 59820 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 139924980 is about 11828.9889677859. The cubic root of 139924980 is about 519.1566457785.

The spelling of 139924980 in words is "one hundred thirty-nine million, nine hundred twenty-four thousand, nine hundred eighty".