90598091 has 4 divisors (see below), whose sum is σ = 90620184. Its totient is φ = 90576000.

The previous prime is 90598087. The next prime is 90598103. The reversal of 90598091 is 19089509.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90598091 - 2² = 90598087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90598021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885 + ... + 13766.

It is an arithmetic number, because the mean of its divisors is an integer number (22655046).

Almost surely, 2^90598091 is an apocalyptic number.

90598091 is a deficient number, since it is larger than the sum of its proper divisors (22093).

90598091 is a wasteful number, since it uses less digits than its factorization.

90598091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22092.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 90598091 is about 9518.3029474797. The cubic root of 90598091 is about 449.1309829612.

The spelling of 90598091 in words is "ninety million, five hundred ninety-eight thousand, ninety-one".