91273349 has 4 divisors (see below), whose sum is σ = 91820064. Its totient is φ = 90726636.

The previous prime is 91273337. The next prime is 91273381. The reversal of 91273349 is 94337219.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94337219 = 83 ⋅1136593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91273349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91273319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273107 + ... + 273440.

It is an arithmetic number, because the mean of its divisors is an integer number (22955016).

Almost surely, 2^91273349 is an apocalyptic number.

It is an amenable number.

91273349 is a deficient number, since it is larger than the sum of its proper divisors (546715).

91273349 is a wasteful number, since it uses less digits than its factorization.

91273349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546714.

The product of its digits is 40824, while the sum is 38.

The square root of 91273349 is about 9553.7086516180. The cubic root of 91273349 is about 450.2440634898.

The spelling of 91273349 in words is "ninety-one million, two hundred seventy-three thousand, three hundred forty-nine".