139915000 has 40 divisors (see below), whose sum is σ = 327832560. Its totient is φ = 55964000.

The previous prime is 139914989. The next prime is 139915021. The reversal of 139915000 is 519931.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 139915000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8992 + ... + 18991.

It is an arithmetic number, because the mean of its divisors is an integer number (8195814).

Almost surely, 2^139915000 is an apocalyptic number.

139915000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139915000 is an abundant number, since it is smaller than the sum of its proper divisors (187917560).

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

139915000 is an equidigital number, since it uses as much as digits as its factorization.

139915000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28009 (or 27990 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 139915000 is about 11828.5671152511. The cubic root of 139915000 is about 519.1443027203.

The spelling of 139915000 in words is "one hundred thirty-nine million, nine hundred fifteen thousand".