91474444492 has 48 divisors (see below), whose sum is σ = 179231996160. Its totient is φ = 40642099200.

The previous prime is 91474444459. The next prime is 91474444513. The reversal of 91474444492 is 29444447419.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442767 + ... + 615622.

It is an arithmetic number, because the mean of its divisors is an integer number (3733999920).

Almost surely, 2^91474444492 is an apocalyptic number.

It is an amenable number.

91474444492 is a deficient number, since it is larger than the sum of its proper divisors (87757551668).

91474444492 is a wasteful number, since it uses less digits than its factorization.

91474444492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058482 (or 1058480 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The spelling of 91474444492 in words is "ninety-one billion, four hundred seventy-four million, four hundred forty-four thousand, four hundred ninety-two".