139348864 has 48 divisors (see below), whose sum is σ = 294977880. Its totient is φ = 65558528.

The previous prime is 139348841. The next prime is 139348871. The reversal of 139348864 is 468843931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35109 + ... + 38875.

Almost surely, 2^139348864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139348864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147488940).

139348864 is an abundant number, since it is smaller than the sum of its proper divisors (155629016).

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

139348864 is an equidigital number, since it uses as much as digits as its factorization.

139348864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815 (or 3786 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 139348864 is about 11804.6119800695. The cubic root of 139348864 is about 518.4431542087.

The spelling of 139348864 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, eight hundred sixty-four".