91113119 has 4 divisors (see below), whose sum is σ = 93051744. Its totient is φ = 89174496.

The previous prime is 91113109. The next prime is 91113131. The reversal of 91113119 is 91131119.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91113119 - 2⁴ = 91113103 is a prime.

It is a super-2 number, since 2×91113119² = 16603200907816322, 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 (91113109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969242 + ... + 969335.

It is an arithmetic number, because the mean of its divisors is an integer number (23262936).

Almost surely, 2^91113119 is an apocalyptic number.

91113119 is a deficient number, since it is larger than the sum of its proper divisors (1938625).

91113119 is a wasteful number, since it uses less digits than its factorization.

91113119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938624.

The product of its digits is 243, while the sum is 26.

The square root of 91113119 is about 9545.3192193871. The cubic root of 91113119 is about 449.9804419483.

The spelling of 91113119 in words is "ninety-one million, one hundred thirteen thousand, one hundred nineteen".