91474091 has 8 divisors (see below), whose sum is σ = 94739520. Its totient is φ = 88216128.

The previous prime is 91474069. The next prime is 91474109. The reversal of 91474091 is 19047419.

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 91474091 - 2¹⁸ = 91211947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91474001) 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, 37295 + ... + 39671.

It is an arithmetic number, because the mean of its divisors is an integer number (11842440).

Almost surely, 2^91474091 is an apocalyptic number.

91474091 is a deficient number, since it is larger than the sum of its proper divisors (3265429).

91474091 is a wasteful number, since it uses less digits than its factorization.

91474091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 91474091 is about 9564.2088538467. The cubic root of 91474091 is about 450.5739031579.

The spelling of 91474091 in words is "ninety-one million, four hundred seventy-four thousand, ninety-one".