91244769 has 48 divisors (see below), whose sum is σ = 154492800. Its totient is φ = 46886400.

The previous prime is 91244767. The next prime is 91244773. The reversal of 91244769 is 96744219.

It is not a de Polignac number, because 91244769 - 2¹ = 91244767 is a prime.

It is a super-2 number, since 2×91244769² = 16651215739726722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91244769.

It is not an unprimeable number, because it can be changed into a prime (91244761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378489 + ... + 378729.

It is an arithmetic number, because the mean of its divisors is an integer number (3218600).

Almost surely, 2^91244769 is an apocalyptic number.

It is an amenable number.

91244769 is a deficient number, since it is larger than the sum of its proper divisors (63248031).

91244769 is a wasteful number, since it uses less digits than its factorization.

91244769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 411 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 91244769 is about 9552.2127802934. The cubic root of 91244769 is about 450.1970643062.

The spelling of 91244769 in words is "ninety-one million, two hundred forty-four thousand, seven hundred sixty-nine".