437989969922 has 18 divisors (see below), whose sum is σ = 672680804067. Its totient is φ = 213882423636.

The previous prime is 437989969817. The next prime is 437989969973. The reversal of 437989969922 is 229969989734.

It can be written as a sum of positive squares in only one way, i.e., 218994984961 + 218994984961 = 467969^2 + 467969^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=467969.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 40239893 + ... + 40250775.

Almost surely, 2^437989969922 is an apocalyptic number.

437989969922 is a deficient number, since it is larger than the sum of its proper divisors (234690834145).

437989969922 is an frugal number, since it uses more digits than its factorization.

437989969922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21854 (or 10928 counting only the distinct ones).

The product of its digits is 952342272, while the sum is 77.

The spelling of 437989969922 in words is "four hundred thirty-seven billion, nine hundred eighty-nine million, nine hundred sixty-nine thousand, nine hundred twenty-two".