139577856 has 120 divisors (see below), whose sum is σ = 409265472. Its totient is φ = 42240000.

The previous prime is 139577843. The next prime is 139577873. The reversal of 139577856 is 658775931.

139577856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 139577799 and 139577808.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185481 + ... + 186231.

Almost surely, 2^139577856 is an apocalyptic number.

139577856 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 139577856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204632736).

139577856 is an abundant number, since it is smaller than the sum of its proper divisors (269687616).

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

139577856 is an equidigital number, since it uses as much as digits as its factorization.

139577856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 767 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 51.

The square root of 139577856 is about 11814.3072585742. The cubic root of 139577856 is about 518.7269846856.

The spelling of 139577856 in words is "one hundred thirty-nine million, five hundred seventy-seven thousand, eight hundred fifty-six".