91492004947 has 8 divisors (see below), whose sum is σ = 104713617152. Its totient is φ = 78308224200.

The previous prime is 91492004899. The next prime is 91492004987. The reversal of 91492004947 is 74940029419.

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

It is a cyclic number.

It is not a de Polignac number, because 91492004947 - 2¹⁹ = 91491480659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91492004947.

It is not an unprimeable number, because it can be changed into a prime (91492004987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9452679 + ... + 9462352.

It is an arithmetic number, because the mean of its divisors is an integer number (13089202144).

Almost surely, 2^91492004947 is an apocalyptic number.

91492004947 is a deficient number, since it is larger than the sum of its proper divisors (13221612205).

91492004947 is a wasteful number, since it uses less digits than its factorization.

91492004947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18915729.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 91492004947 in words is "ninety-one billion, four hundred ninety-two million, four thousand, nine hundred forty-seven".