91902041 has 12 divisors (see below), whose sum is σ = 115448256. Its totient is φ = 71611320.

The previous prime is 91902037. The next prime is 91902047. The reversal of 91902041 is 14020919.

It is not a de Polignac number, because 91902041 - 2² = 91902037 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91902041.

It is not an unprimeable number, because it can be changed into a prime (91902047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53405 + ... + 55098.

It is an arithmetic number, because the mean of its divisors is an integer number (9620688).

Almost surely, 2^91902041 is an apocalyptic number.

It is an amenable number.

91902041 is a deficient number, since it is larger than the sum of its proper divisors (23546215).

91902041 is a wasteful number, since it uses less digits than its factorization.

91902041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108532 (or 108521 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 91902041 is about 9586.5552207245. Note that the first 3 decimals coincide. The cubic root of 91902041 is about 451.2754613053.

The spelling of 91902041 in words is "ninety-one million, nine hundred two thousand, forty-one".