872691944 has 16 divisors (see below), whose sum is σ = 1707441120. Its totient is φ = 417374320.

The previous prime is 872691931. The next prime is 872691949. The reversal of 872691944 is 449196278.

It is a junction number, because it is equal to n+sod(n) for n = 872691892 and 872691901.

It is not an unprimeable number, because it can be changed into a prime (872691949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371262 + ... + 2371629.

It is an arithmetic number, because the mean of its divisors is an integer number (106715070).

Almost surely, 2^872691944 is an apocalyptic number.

It is an amenable number.

872691944 is a deficient number, since it is larger than the sum of its proper divisors (834749176).

872691944 is a wasteful number, since it uses less digits than its factorization.

872691944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742920 (or 4742916 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 872691944 is about 29541.3598874527. The cubic root of 872691944 is about 955.6238694705.

The spelling of 872691944 in words is "eight hundred seventy-two million, six hundred ninety-one thousand, nine hundred forty-four".