91722396 has 12 divisors (see below), whose sum is σ = 214018952. Its totient is φ = 30574128.

The previous prime is 91722391. The next prime is 91722409. The reversal of 91722396 is 69322719.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91722391) 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, 3821755 + ... + 3821778.

Almost surely, 2^91722396 is an apocalyptic number.

It is an amenable number.

91722396 is an abundant number, since it is smaller than the sum of its proper divisors (122296556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91722396 is a wasteful number, since it uses less digits than its factorization.

91722396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643540 (or 7643538 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 91722396 is about 9577.1810048678. The cubic root of 91722396 is about 450.9812267773.

The spelling of 91722396 in words is "ninety-one million, seven hundred twenty-two thousand, three hundred ninety-six".