91516469 has 16 divisors (see below), whose sum is σ = 103118400. Its totient is φ = 80496000.

The previous prime is 91516463. The next prime is 91516487. The reversal of 91516469 is 96461519.

It is a cyclic number.

It is not a de Polignac number, because 91516469 - 2²⁰ = 90467893 is a prime.

It is a super-2 number, since 2×91516469² = 16750528196455922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91516463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58307 + ... + 59855.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^91516469 is an apocalyptic number.

It is an amenable number.

91516469 is a deficient number, since it is larger than the sum of its proper divisors (11601931).

91516469 is a wasteful number, since it uses less digits than its factorization.

91516469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732.

The product of its digits is 58320, while the sum is 41.

The square root of 91516469 is about 9566.4240445425. The cubic root of 91516469 is about 450.6434728497.

The spelling of 91516469 in words is "ninety-one million, five hundred sixteen thousand, four hundred sixty-nine".