91379379 has 64 divisors (see below), whose sum is σ = 160563200. Its totient is φ = 44883072.

The previous prime is 91379363. The next prime is 91379383. The reversal of 91379379 is 97397319.

It is not a de Polignac number, because 91379379 - 2⁴ = 91379363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91379329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 409662 + ... + 409884.

It is an arithmetic number, because the mean of its divisors is an integer number (2508800).

Almost surely, 2^91379379 is an apocalyptic number.

91379379 is a deficient number, since it is larger than the sum of its proper divisors (69183821).

91379379 is a wasteful number, since it uses less digits than its factorization.

91379379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

The product of its digits is 321489, while the sum is 48.

The square root of 91379379 is about 9559.2561949139. The cubic root of 91379379 is about 450.4183418328.

The spelling of 91379379 in words is "ninety-one million, three hundred seventy-nine thousand, three hundred seventy-nine".