139557044 has 36 divisors (see below), whose sum is σ = 275736132. Its totient is φ = 61712640.

The previous prime is 139557043. The next prime is 139557107. The reversal of 139557044 is 440755931.

It can be written as a sum of positive squares in 2 ways, for example, as 131377444 + 8179600 = 11462^2 + 2860^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139556989 and 139557007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139557043) 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, 14012 + ... + 21804.

It is an arithmetic number, because the mean of its divisors is an integer number (7659337).

Almost surely, 2^139557044 is an apocalyptic number.

It is an amenable number.

139557044 is a deficient number, since it is larger than the sum of its proper divisors (136179088).

139557044 is a wasteful number, since it uses less digits than its factorization.

139557044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7856 (or 7843 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 139557044 is about 11813.4264292795. The cubic root of 139557044 is about 518.7012015064.

The spelling of 139557044 in words is "one hundred thirty-nine million, five hundred fifty-seven thousand, forty-four".