139679421044 has 108 divisors (see below), whose sum is σ = 275037607404. Its totient is φ = 62047752192.

The previous prime is 139679421043. The next prime is 139679421059. The reversal of 139679421044 is 440124976931.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5071148944 + 134608272100 = 71212^2 + 366890^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139679420983 and 139679421001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139679421041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 180697442 + ... + 180698214.

It is an arithmetic number, because the mean of its divisors is an integer number (2546644513).

Almost surely, 2^139679421044 is an apocalyptic number.

It is an amenable number.

139679421044 is a deficient number, since it is larger than the sum of its proper divisors (135358186360).

139679421044 is a wasteful number, since it uses less digits than its factorization.

139679421044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 139679421044 in words is "one hundred thirty-nine billion, six hundred seventy-nine million, four hundred twenty-one thousand, forty-four".