139455372 has 54 divisors (see below), whose sum is σ = 379300572. Its totient is φ = 39762576.

The previous prime is 139455353. The next prime is 139455377. The reversal of 139455372 is 273554931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 139455372.

It is not an unprimeable number, because it can be changed into a prime (139455377) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 286113 + ... + 286599.

Almost surely, 2^139455372 is an apocalyptic number.

139455372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139455372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189650286).

139455372 is an abundant number, since it is smaller than the sum of its proper divisors (239845200).

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

139455372 is an equidigital number, since it uses as much as digits as its factorization.

139455372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 499 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 139455372 is about 11809.1224060046. The cubic root of 139455372 is about 518.5752071478.

The spelling of 139455372 in words is "one hundred thirty-nine million, four hundred fifty-five thousand, three hundred seventy-two".