874139644 has 12 divisors (see below), whose sum is σ = 1748279344. Its totient is φ = 374631264.

The previous prime is 874139621. The next prime is 874139659. The reversal of 874139644 is 446931478.

874139644 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 874139594 and 874139603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15609609 + ... + 15609664.

Almost surely, 2^874139644 is an apocalyptic number.

It is an amenable number.

874139644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

874139644 is a wasteful number, since it uses less digits than its factorization.

874139644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31219284 (or 31219282 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 874139644 is about 29565.8526682387. The cubic root of 874139644 is about 956.1520025224.

The spelling of 874139644 in words is "eight hundred seventy-four million, one hundred thirty-nine thousand, six hundred forty-four".