139456044 has 72 divisors (see below), whose sum is σ = 433873440. Its totient is φ = 36778752.

The previous prime is 139456043. The next prime is 139456069. The reversal of 139456044 is 440654931.

139456044 is a `hidden beast` number, since 1 + 3 + 9 + 45 + 604 + 4 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (139456043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18009 + ... + 24560.

It is an arithmetic number, because the mean of its divisors is an integer number (6026020).

Almost surely, 2^139456044 is an apocalyptic number.

139456044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139456044 is an abundant number, since it is smaller than the sum of its proper divisors (294417396).

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

139456044 is a wasteful number, since it uses less digits than its factorization.

139456044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42599 (or 42594 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 139456044 is about 11809.1508585503. The cubic root of 139456044 is about 518.5760401072.

The spelling of 139456044 in words is "one hundred thirty-nine million, four hundred fifty-six thousand, forty-four".