90221259 has 8 divisors (see below), whose sum is σ = 120484672. Its totient is φ = 60052680.

The previous prime is 90221251. The next prime is 90221269. The reversal of 90221259 is 95212209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90221259 - 2³ = 90221251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90221251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21457 + ... + 25314.

It is an arithmetic number, because the mean of its divisors is an integer number (15060584).

Almost surely, 2^90221259 is an apocalyptic number.

90221259 is a deficient number, since it is larger than the sum of its proper divisors (30263413).

90221259 is a wasteful number, since it uses less digits than its factorization.

90221259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47417.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 90221259 is about 9498.4871953380. The cubic root of 90221259 is about 448.5074152804.

The spelling of 90221259 in words is "ninety million, two hundred twenty-one thousand, two hundred fifty-nine".