139597472 has 72 divisors (see below), whose sum is σ = 338573844. Its totient is φ = 56297472.

The previous prime is 139597441. The next prime is 139597477. The reversal of 139597472 is 274795931.

It can be written as a sum of positive squares in 2 ways, for example, as 123565456 + 16032016 = 11116^2 + 4004^2 .

It is not an unprimeable number, because it can be changed into a prime (139597477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24038 + ... + 29274.

Almost surely, 2^139597472 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 139597472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169286922).

139597472 is an abundant number, since it is smaller than the sum of its proper divisors (198976372).

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

139597472 is a wasteful number, since it uses less digits than its factorization.

139597472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278 (or 5263 counting only the distinct ones).

The product of its digits is 476280, while the sum is 47.

The square root of 139597472 is about 11815.1374092729. The cubic root of 139597472 is about 518.7512838406.

The spelling of 139597472 in words is "one hundred thirty-nine million, five hundred ninety-seven thousand, four hundred seventy-two".