139079400 has 48 divisors (see below), whose sum is σ = 431148000. Its totient is φ = 37087680.

The previous prime is 139079399. The next prime is 139079401. The reversal of 139079400 is 4970931.

It is an interprime number because it is at equal distance from previous prime (139079399) and next prime (139079401).

It is not an unprimeable number, because it can be changed into a prime (139079401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115300 + ... + 116499.

It is an arithmetic number, because the mean of its divisors is an integer number (8982250).

Almost surely, 2^139079400 is an apocalyptic number.

139079400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139079400 is an abundant number, since it is smaller than the sum of its proper divisors (292068600).

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

139079400 is a wasteful number, since it uses less digits than its factorization.

139079400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231818 (or 231809 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 139079400 is about 11793.1929518685. The cubic root of 139079400 is about 518.1087610706.

The spelling of 139079400 in words is "one hundred thirty-nine million, seventy-nine thousand, four hundred".