91889366 has 8 divisors (see below), whose sum is σ = 141039624. Its totient is φ = 44876160.

The previous prime is 91889359. The next prime is 91889381. The reversal of 91889366 is 66398819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534155 + ... + 534326.

It is an arithmetic number, because the mean of its divisors is an integer number (17629953).

Almost surely, 2^91889366 is an apocalyptic number.

91889366 is a deficient number, since it is larger than the sum of its proper divisors (49150258).

91889366 is a wasteful number, since it uses less digits than its factorization.

91889366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068526.

The product of its digits is 559872, while the sum is 50.

The square root of 91889366 is about 9585.8941158350. The cubic root of 91889366 is about 451.2547139262.

The spelling of 91889366 in words is "ninety-one million, eight hundred eighty-nine thousand, three hundred sixty-six".