139321590 has 16 divisors (see below), whose sum is σ = 334371888. Its totient is φ = 37152416.

The previous prime is 139321561. The next prime is 139321601. The reversal of 139321590 is 95123931.

139321590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321997 + ... + 2322056.

It is an arithmetic number, because the mean of its divisors is an integer number (20898243).

Almost surely, 2^139321590 is an apocalyptic number.

139321590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139321590 is an abundant number, since it is smaller than the sum of its proper divisors (195050298).

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

139321590 is a wasteful number, since it uses less digits than its factorization.

139321590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644063.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 139321590 is about 11803.4566970867. The cubic root of 139321590 is about 518.4093279762.

The spelling of 139321590 in words is "one hundred thirty-nine million, three hundred twenty-one thousand, five hundred ninety".