91347922 has 4 divisors (see below), whose sum is σ = 137021886. Its totient is φ = 45673960.

The previous prime is 91347911. The next prime is 91347923. The reversal of 91347922 is 22974319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85914361 + 5433561 = 9269^2 + 2331^2 .

It is not an unprimeable number, because it can be changed into a prime (91347923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22836979 + ... + 22836982.

Almost surely, 2^91347922 is an apocalyptic number.

91347922 is a deficient number, since it is larger than the sum of its proper divisors (45673964).

91347922 is a wasteful number, since it uses less digits than its factorization.

91347922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45673963.

The product of its digits is 27216, while the sum is 37.

The square root of 91347922 is about 9557.6106846847. The cubic root of 91347922 is about 450.3666509732.

The spelling of 91347922 in words is "ninety-one million, three hundred forty-seven thousand, nine hundred twenty-two".