90235259 has 4 divisors (see below), whose sum is σ = 90693504. Its totient is φ = 89777016.

The previous prime is 90235247. The next prime is 90235273. The reversal of 90235259 is 95253209.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90235259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90231259) 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, 228827 + ... + 229220.

It is an arithmetic number, because the mean of its divisors is an integer number (22673376).

Almost surely, 2^90235259 is an apocalyptic number.

90235259 is a deficient number, since it is larger than the sum of its proper divisors (458245).

90235259 is a wasteful number, since it uses less digits than its factorization.

90235259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458244.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 90235259 is about 9499.2241262116. The cubic root of 90235259 is about 448.5306129876.

The spelling of 90235259 in words is "ninety million, two hundred thirty-five thousand, two hundred fifty-nine".