805980972 has 12 divisors (see below), whose sum is σ = 1880622296. Its totient is φ = 268660320.

The previous prime is 805980971. The next prime is 805980977. The reversal of 805980972 is 279089508.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (805980971) 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, 33582529 + ... + 33582552.

Almost surely, 2^805980972 is an apocalyptic number.

It is an amenable number.

805980972 is an abundant number, since it is smaller than the sum of its proper divisors (1074641324).

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

805980972 is a wasteful number, since it uses less digits than its factorization.

805980972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67165088 (or 67165086 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 805980972 is about 28389.8040148219. The cubic root of 805980972 is about 930.6254597093.

The spelling of 805980972 in words is "eight hundred five million, nine hundred eighty thousand, nine hundred seventy-two".