91107869 has 8 divisors (see below), whose sum is σ = 97218240. Its totient is φ = 85129056.

The previous prime is 91107857. The next prime is 91107871. The reversal of 91107869 is 96870119.

It is a happy number.

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 91107869 - 2¹⁶ = 91042333 is a prime.

It is a super-2 number, since 2×91107869² = 16601287587442322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91107889) 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, 31457 + ... + 34230.

It is an arithmetic number, because the mean of its divisors is an integer number (12152280).

Almost surely, 2^91107869 is an apocalyptic number.

It is an amenable number.

91107869 is a deficient number, since it is larger than the sum of its proper divisors (6110371).

91107869 is a wasteful number, since it uses less digits than its factorization.

91107869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65779.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 91107869 is about 9545.0442115267. The cubic root of 91107869 is about 449.9717990558.

The spelling of 91107869 in words is "ninety-one million, one hundred seven thousand, eight hundred sixty-nine".