91358479 has 8 divisors (see below), whose sum is σ = 96390000. Its totient is φ = 86349312.

The previous prime is 91358431. The next prime is 91358489. The reversal of 91358479 is 97485319.

91358479 = 1532² + 1533² + ... + 1569².

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 91358479 - 2¹⁵ = 91325711 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 (91358429) 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, 3177 + ... + 13885.

It is an arithmetic number, because the mean of its divisors is an integer number (12048750).

Almost surely, 2^91358479 is an apocalyptic number.

91358479 is a deficient number, since it is larger than the sum of its proper divisors (5031521).

91358479 is a wasteful number, since it uses less digits than its factorization.

91358479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11177.

The product of its digits is 272160, while the sum is 46.

The square root of 91358479 is about 9558.1629511115. The cubic root of 91358479 is about 450.3839997992.

The spelling of 91358479 in words is "ninety-one million, three hundred fifty-eight thousand, four hundred seventy-nine".