91412399 has 8 divisors (see below), whose sum is σ = 98613312. Its totient is φ = 84235680.

The previous prime is 91412393. The next prime is 91412413. The reversal of 91412399 is 99321419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91412399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91412393) 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, 2234 + ... + 13704.

It is an arithmetic number, because the mean of its divisors is an integer number (12326664).

Almost surely, 2^91412399 is an apocalyptic number.

91412399 is a deficient number, since it is larger than the sum of its proper divisors (7200913).

91412399 is a wasteful number, since it uses less digits than its factorization.

91412399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12097.

The product of its digits is 17496, while the sum is 38.

The square root of 91412399 is about 9560.9831607424. The cubic root of 91412399 is about 450.4725882895.

The spelling of 91412399 in words is "ninety-one million, four hundred twelve thousand, three hundred ninety-nine".