91838396 has 12 divisors (see below), whose sum is σ = 173080152. Its totient is φ = 42386928.

The previous prime is 91838363. The next prime is 91838413. The reversal of 91838396 is 69383819.

It is a self number, because there is not a number n which added to its sum of digits gives 91838396.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 883010 + ... + 883113.

It is an arithmetic number, because the mean of its divisors is an integer number (14423346).

Almost surely, 2^91838396 is an apocalyptic number.

It is an amenable number.

91838396 is a deficient number, since it is larger than the sum of its proper divisors (81241756).

91838396 is a wasteful number, since it uses less digits than its factorization.

91838396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766140 (or 1766138 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 91838396 is about 9583.2351531203. The cubic root of 91838396 is about 451.1712631862.

The spelling of 91838396 in words is "ninety-one million, eight hundred thirty-eight thousand, three hundred ninety-six".