91922090 has 32 divisors (see below), whose sum is σ = 179504640. Its totient is φ = 33689664.

The previous prime is 91922069. The next prime is 91922093. The reversal of 91922090 is 9022919.

It is not an unprimeable number, because it can be changed into a prime (91922093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15527 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (5609520).

Almost surely, 2^91922090 is an apocalyptic number.

91922090 is a deficient number, since it is larger than the sum of its proper divisors (87582550).

91922090 is a wasteful number, since it uses less digits than its factorization.

91922090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 91922090 is about 9587.6008469272. The cubic root of 91922090 is about 451.3082750992.

The spelling of 91922090 in words is "ninety-one million, nine hundred twenty-two thousand, ninety".