90459559 has 4 divisors (see below), whose sum is σ = 90495616. Its totient is φ = 90423504.

The previous prime is 90459557. The next prime is 90459563. The reversal of 90459559 is 95595409.

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 90459559 - 2¹ = 90459557 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 (90459553) 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, 13959 + ... + 19384.

It is an arithmetic number, because the mean of its divisors is an integer number (22623904).

Almost surely, 2^90459559 is an apocalyptic number.

90459559 is a deficient number, since it is larger than the sum of its proper divisors (36057).

90459559 is a wasteful number, since it uses less digits than its factorization.

90459559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36056.

The product of its (nonzero) digits is 364500, while the sum is 46.

The square root of 90459559 is about 9511.0230259421. The cubic root of 90459559 is about 448.9019466674.

The spelling of 90459559 in words is "ninety million, four hundred fifty-nine thousand, five hundred fifty-nine".