90395091 has 12 divisors (see below), whose sum is σ = 130653432. Its totient is φ = 60225216.

The previous prime is 90395089. The next prime is 90395099. The reversal of 90395091 is 19059309.

It is not a de Polignac number, because 90395091 - 2¹ = 90395089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90395099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24340 + ... + 27806.

It is an arithmetic number, because the mean of its divisors is an integer number (10887786).

Almost surely, 2^90395091 is an apocalyptic number.

90395091 is a deficient number, since it is larger than the sum of its proper divisors (40258341).

90395091 is a wasteful number, since it uses less digits than its factorization.

90395091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370 (or 6367 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 90395091 is about 9507.6333017213. The cubic root of 90395091 is about 448.7952813663.

The spelling of 90395091 in words is "ninety million, three hundred ninety-five thousand, ninety-one".