139350864 has 80 divisors (see below), whose sum is σ = 387118080. Its totient is φ = 43056000.

The previous prime is 139350847. The next prime is 139350889. The reversal of 139350864 is 468053931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41239 + ... + 44489.

It is an arithmetic number, because the mean of its divisors is an integer number (4838976).

Almost surely, 2^139350864 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 139350864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193559040).

139350864 is an abundant number, since it is smaller than the sum of its proper divisors (247767216).

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

139350864 is a wasteful number, since it uses less digits than its factorization.

139350864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 139350864 is about 11804.6966924187. The cubic root of 139350864 is about 518.4456345096.

The spelling of 139350864 in words is "one hundred thirty-nine million, three hundred fifty thousand, eight hundred sixty-four".