491333992 has 8 divisors (see below), whose sum is σ = 921251250. Its totient is φ = 245666992.

The previous prime is 491333963. The next prime is 491334001. The reversal of 491333992 is 299333194.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 486378916 + 4955076 = 22054^2 + 2226^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 30708367 + ... + 30708382.

Almost surely, 2^491333992 is an apocalyptic number.

It is an amenable number.

491333992 is a deficient number, since it is larger than the sum of its proper divisors (429917258).

491333992 is a wasteful number, since it uses less digits than its factorization.

491333992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61416755 (or 61416751 counting only the distinct ones).

The product of its digits is 157464, while the sum is 43.

The square root of 491333992 is about 22166.0549489529. The cubic root of 491333992 is about 789.0882993207.

The spelling of 491333992 in words is "four hundred ninety-one million, three hundred thirty-three thousand, nine hundred ninety-two".