90019227 has 8 divisors (see below), whose sum is σ = 121472064. Its totient is φ = 59289608.

The previous prime is 90019211. The next prime is 90019249. The reversal of 90019227 is 72291009.

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

It is a cyclic number.

It is not a de Polignac number, because 90019227 - 2⁴ = 90019211 is a prime.

It is a super-2 number, since 2×90019227² = 16206922459355058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90019194 and 90019203.

It is not an unprimeable number, because it can be changed into a prime (90019297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180513 + ... + 181010.

It is an arithmetic number, because the mean of its divisors is an integer number (15184008).

Almost surely, 2^90019227 is an apocalyptic number.

90019227 is a deficient number, since it is larger than the sum of its proper divisors (31452837).

90019227 is a wasteful number, since it uses less digits than its factorization.

90019227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361609.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 90019227 is about 9487.8462782657. The cubic root of 90019227 is about 448.1723849646.

The spelling of 90019227 in words is "ninety million, nineteen thousand, two hundred twenty-seven".