139520398 has 16 divisors (see below), whose sum is σ = 219262464. Its totient is φ = 66500280.

The previous prime is 139520387. The next prime is 139520413. The reversal of 139520398 is 893025931.

It is a self number, because there is not a number n which added to its sum of digits gives 139520398.

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, 12640 + ... + 20947.

It is an arithmetic number, because the mean of its divisors is an integer number (13703904).

Almost surely, 2^139520398 is an apocalyptic number.

139520398 is a deficient number, since it is larger than the sum of its proper divisors (79742066).

139520398 is a wasteful number, since it uses less digits than its factorization.

139520398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33687.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 139520398 is about 11811.8752956506. The cubic root of 139520398 is about 518.6557959677.

The spelling of 139520398 in words is "one hundred thirty-nine million, five hundred twenty thousand, three hundred ninety-eight".