91948923 has 24 divisors (see below), whose sum is σ = 152518080. Its totient is φ = 52792560.

The previous prime is 91948907. The next prime is 91948931. The reversal of 91948923 is 32984919.

It is not a de Polignac number, because 91948923 - 2⁴ = 91948907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91948973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22561 + ... + 26322.

It is an arithmetic number, because the mean of its divisors is an integer number (6354920).

Almost surely, 2^91948923 is an apocalyptic number.

91948923 is a deficient number, since it is larger than the sum of its proper divisors (60569157).

91948923 is a wasteful number, since it uses less digits than its factorization.

91948923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48919 (or 48916 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 91948923 is about 9589.0001042862. Note that the first 3 decimals coincide. The cubic root of 91948923 is about 451.3521846636.

The spelling of 91948923 in words is "ninety-one million, nine hundred forty-eight thousand, nine hundred twenty-three".