91738479 has 32 divisors (see below), whose sum is σ = 150599680. Its totient is φ = 48498912.

The previous prime is 91738447. The next prime is 91738481. The reversal of 91738479 is 97483719.

It is not a de Polignac number, because 91738479 - 2⁵ = 91738447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91738499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14484 + ... + 19830.

It is an arithmetic number, because the mean of its divisors is an integer number (4706240).

Almost surely, 2^91738479 is an apocalyptic number.

91738479 is a deficient number, since it is larger than the sum of its proper divisors (58861201).

91738479 is a wasteful number, since it uses less digits than its factorization.

91738479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419.

The product of its digits is 381024, while the sum is 48.

The square root of 91738479 is about 9578.0206201490. The cubic root of 91738479 is about 451.0075842337.

The spelling of 91738479 in words is "ninety-one million, seven hundred thirty-eight thousand, four hundred seventy-nine".