91223049 has 8 divisors (see below), whose sum is σ = 125554432. Its totient is φ = 58853520.

The previous prime is 91223023. The next prime is 91223051. The reversal of 91223049 is 94032219.

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

It is not a de Polignac number, because 91223049 - 2⁸ = 91222793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91223449) 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, 490354 + ... + 490539.

It is an arithmetic number, because the mean of its divisors is an integer number (15694304).

Almost surely, 2^91223049 is an apocalyptic number.

It is an amenable number.

91223049 is a deficient number, since it is larger than the sum of its proper divisors (34331383).

91223049 is a wasteful number, since it uses less digits than its factorization.

91223049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980927.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 91223049 is about 9551.0758032800. The cubic root of 91223049 is about 450.1613396784.

The spelling of 91223049 in words is "ninety-one million, two hundred twenty-three thousand, forty-nine".