991303876 has 12 divisors (see below), whose sum is σ = 1735138300. Its totient is φ = 495550080.

The previous prime is 991303867. The next prime is 991303883. The reversal of 991303876 is 678303199.

It can be written as a sum of positive squares in 2 ways, for example, as 50041476 + 941262400 = 7074^2 + 30680^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945 + ... + 44536.

Almost surely, 2^991303876 is an apocalyptic number.

It is an amenable number.

991303876 is a deficient number, since it is larger than the sum of its proper divisors (743834424).

991303876 is a wasteful number, since it uses less digits than its factorization.

991303876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50934 (or 50932 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 991303876 is about 31484.9785770929. The cubic root of 991303876 is about 997.0928486611.

The spelling of 991303876 in words is "nine hundred ninety-one million, three hundred three thousand, eight hundred seventy-six".