91613229 has 8 divisors (see below), whose sum is σ = 125130432. Its totient is φ = 59585760.

The previous prime is 91613227. The next prime is 91613237. The reversal of 91613229 is 92231619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91613229 - 2¹ = 91613227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91613229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91613227) 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, 372289 + ... + 372534.

It is an arithmetic number, because the mean of its divisors is an integer number (15641304).

Almost surely, 2^91613229 is an apocalyptic number.

It is an amenable number.

91613229 is a deficient number, since it is larger than the sum of its proper divisors (33517203).

91613229 is a wasteful number, since it uses less digits than its factorization.

91613229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744867.

The product of its digits is 5832, while the sum is 33.

The square root of 91613229 is about 9571.4799796061. The cubic root of 91613229 is about 450.8022380949.

The spelling of 91613229 in words is "ninety-one million, six hundred thirteen thousand, two hundred twenty-nine".