91340972469 has 12 divisors (see below), whose sum is σ = 131976707616. Its totient is φ = 60875636712.

The previous prime is 91340972461. The next prime is 91340972479. The reversal of 91340972469 is 96427904319.

91340972469 is a `hidden beast` number, since 91 + 3 + 4 + 0 + 97 + 2 + 469 = 666.

It is not a de Polignac number, because 91340972469 - 2³ = 91340972461 is a prime.

It is a super-2 number, since 2×91340972469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91340972461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1497177 + ... + 1556990.

It is an arithmetic number, because the mean of its divisors is an integer number (10998058968).

Almost surely, 2^91340972469 is an apocalyptic number.

It is an amenable number.

91340972469 is a deficient number, since it is larger than the sum of its proper divisors (40635735147).

91340972469 is a wasteful number, since it uses less digits than its factorization.

91340972469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057496 (or 3057493 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 91340972469 in words is "ninety-one billion, three hundred forty million, nine hundred seventy-two thousand, four hundred sixty-nine".