91089395 has 8 divisors (see below), whose sum is σ = 109413504. Its totient is φ = 72800704.

The previous prime is 91089371. The next prime is 91089403. The reversal of 91089395 is 59398019.

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

It is a cyclic number.

It is not a de Polignac number, because 91089395 - 2¹² = 91085299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2819 + ... + 13788.

It is an arithmetic number, because the mean of its divisors is an integer number (13676688).

Almost surely, 2^91089395 is an apocalyptic number.

91089395 is a deficient number, since it is larger than the sum of its proper divisors (18324109).

91089395 is a wasteful number, since it uses less digits than its factorization.

91089395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17709.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 91089395 is about 9544.0764351508. The cubic root of 91089395 is about 449.9413833115.

The spelling of 91089395 in words is "ninety-one million, eighty-nine thousand, three hundred ninety-five".