91189842 has 32 divisors (see below), whose sum is σ = 187249920. Its totient is φ = 29589840.

The previous prime is 91189837. The next prime is 91189843. The reversal of 91189842 is 24898119.

It is a junction number, because it is equal to n+sod(n) for n = 91189794 and 91189803.

It is not an unprimeable number, because it can be changed into a prime (91189843) 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, 147009 + ... + 147627.

It is an arithmetic number, because the mean of its divisors is an integer number (5851560).

Almost surely, 2^91189842 is an apocalyptic number.

91189842 is an abundant number, since it is smaller than the sum of its proper divisors (96060078).

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

91189842 is a wasteful number, since it uses less digits than its factorization.

91189842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its digits is 41472, while the sum is 42.

The square root of 91189842 is about 9549.3372544905. The cubic root of 91189842 is about 450.1067104957.

The spelling of 91189842 in words is "ninety-one million, one hundred eighty-nine thousand, eight hundred forty-two".