139323552 has 48 divisors (see below), whose sum is σ = 371200032. Its totient is φ = 45745920.

The previous prime is 139323529. The next prime is 139323563. The reversal of 139323552 is 255323931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×139323552² = 38822104283793408, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4399 + ... + 17262.

It is an arithmetic number, because the mean of its divisors is an integer number (7733334).

Almost surely, 2^139323552 is an apocalyptic number.

139323552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139323552 is an abundant number, since it is smaller than the sum of its proper divisors (231876480).

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

139323552 is a wasteful number, since it uses less digits than its factorization.

139323552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21741 (or 21733 counting only the distinct ones).

The product of its digits is 24300, while the sum is 33.

The square root of 139323552 is about 11803.5398080406. The cubic root of 139323552 is about 518.4117614692.

The spelling of 139323552 in words is "one hundred thirty-nine million, three hundred twenty-three thousand, five hundred fifty-two".