90196559 has 4 divisors (see below), whose sum is σ = 90266160. Its totient is φ = 90126960.

The previous prime is 90196549. The next prime is 90196573. The reversal of 90196559 is 95569109.

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 90196559 - 2¹⁶ = 90131023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90196549) 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, 32819 + ... + 35460.

It is an arithmetic number, because the mean of its divisors is an integer number (22566540).

Almost surely, 2^90196559 is an apocalyptic number.

90196559 is a deficient number, since it is larger than the sum of its proper divisors (69601).

90196559 is a wasteful number, since it uses less digits than its factorization.

90196559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69600.

The product of its (nonzero) digits is 109350, while the sum is 44.

The square root of 90196559 is about 9497.1868992876. The cubic root of 90196559 is about 448.4664820444.

The spelling of 90196559 in words is "ninety million, one hundred ninety-six thousand, five hundred fifty-nine".