91535479 has 12 divisors (see below), whose sum is σ = 106970304. Its totient is φ = 78097824.

The previous prime is 91535453. The next prime is 91535489. The reversal of 91535479 is 97453519.

It is not a de Polignac number, because 91535479 - 2⁷ = 91535351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91535449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6739 + ... + 15115.

It is an arithmetic number, because the mean of its divisors is an integer number (8914192).

Almost surely, 2^91535479 is an apocalyptic number.

91535479 is a deficient number, since it is larger than the sum of its proper divisors (15434825).

91535479 is a wasteful number, since it uses less digits than its factorization.

91535479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614 (or 8607 counting only the distinct ones).

The product of its digits is 170100, while the sum is 43.

The square root of 91535479 is about 9567.4175721560. The cubic root of 91535479 is about 450.6746735702.

The spelling of 91535479 in words is "ninety-one million, five hundred thirty-five thousand, four hundred seventy-nine".