22439191972 has 12 divisors (see below), whose sum is σ = 39673417420. Its totient is φ = 11103929856.

The previous prime is 22439191963. The next prime is 22439191991. The reversal of 22439191972 is 27919193422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17531348836 + 4907843136 = 132406^2 + 70056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28916097 + ... + 28916872.

Almost surely, 2^22439191972 is an apocalyptic number.

It is an amenable number.

22439191972 is a deficient number, since it is larger than the sum of its proper divisors (17234225448).

22439191972 is a wasteful number, since it uses less digits than its factorization.

22439191972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57833070 (or 57833068 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The spelling of 22439191972 in words is "twenty-two billion, four hundred thirty-nine million, one hundred ninety-one thousand, nine hundred seventy-two".