805980956 has 12 divisors (see below), whose sum is σ = 1538691000. Its totient is φ = 366354960.

The previous prime is 805980943. The next prime is 805980971. The reversal of 805980956 is 659089508.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 9158831 + ... + 9158918.

It is an arithmetic number, because the mean of its divisors is an integer number (128224250).

Almost surely, 2^805980956 is an apocalyptic number.

It is an amenable number.

805980956 is a deficient number, since it is larger than the sum of its proper divisors (732710044).

805980956 is a wasteful number, since it uses less digits than its factorization.

805980956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317764 (or 18317762 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 805980956 is about 28389.8037330306. The cubic root of 805980956 is about 930.6254535512.

The spelling of 805980956 in words is "eight hundred five million, nine hundred eighty thousand, nine hundred fifty-six".