991002982 has 8 divisors (see below), whose sum is σ = 1487550456. Its totient is φ = 495152832.

The previous prime is 991002977. The next prime is 991003003. The reversal of 991002982 is 289200199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 170763 + ... + 176470.

It is an arithmetic number, because the mean of its divisors is an integer number (185943807).

Almost surely, 2^991002982 is an apocalyptic number.

991002982 is a deficient number, since it is larger than the sum of its proper divisors (496547474).

991002982 is a wasteful number, since it uses less digits than its factorization.

991002982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348662.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 991002982 is about 31480.1998405347. The cubic root of 991002982 is about 996.9919547363.

The spelling of 991002982 in words is "nine hundred ninety-one million, two thousand, nine hundred eighty-two".