91223629 has 8 divisors (see below), whose sum is σ = 104328320. Its totient is φ = 78137136.

The previous prime is 91223533. The next prime is 91223651. The reversal of 91223629 is 92632219.

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

It is a de Polignac number, because none of the positive numbers 2^k-91223629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91223594 and 91223603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91223659) 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, 8827 + ... + 16135.

It is an arithmetic number, because the mean of its divisors is an integer number (13041040).

Almost surely, 2^91223629 is an apocalyptic number.

It is an amenable number.

91223629 is a deficient number, since it is larger than the sum of its proper divisors (13104691).

91223629 is a wasteful number, since it uses less digits than its factorization.

91223629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099.

The product of its digits is 11664, while the sum is 34.

The square root of 91223629 is about 9551.1061663035. The cubic root of 91223629 is about 450.1622937247.

The spelling of 91223629 in words is "ninety-one million, two hundred twenty-three thousand, six hundred twenty-nine".