139107456 has 80 divisors (see below), whose sum is σ = 414012390. Its totient is φ = 46365696.

The previous prime is 139107433. The next prime is 139107469. The reversal of 139107456 is 654701931.

It can be written as a sum of positive squares in only one way, i.e., 124545600 + 14561856 = 11160^2 + 3816^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 139107456.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3660 + ... + 17076.

Almost surely, 2^139107456 is an apocalyptic number.

139107456 is a gapful number since it is divisible by the number (16) 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 139107456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207006195).

139107456 is an abundant number, since it is smaller than the sum of its proper divisors (274904934).

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

139107456 is an equidigital number, since it uses as much as digits as its factorization.

139107456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13443 (or 13422 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 139107456 is about 11794.3823916303. The cubic root of 139107456 is about 518.1435974831.

The spelling of 139107456 in words is "one hundred thirty-nine million, one hundred seven thousand, four hundred fifty-six".