90220219 has 2 divisors, whose sum is σ = 90220220. Its totient is φ = 90220218.

The previous prime is 90220211. The next prime is 90220243. The reversal of 90220219 is 91202209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90220219 - 2³ = 90220211 is a prime.

It is a super-2 number, since 2×90220219² = 16279375832815922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90220193 and 90220202.

It is not a weakly prime, because it can be changed into another prime (90220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45110109 + 45110110.

It is an arithmetic number, because the mean of its divisors is an integer number (45110110).

Almost surely, 2^90220219 is an apocalyptic number.

90220219 is a deficient number, since it is larger than the sum of its proper divisors (1).

90220219 is an equidigital number, since it uses as much as digits as its factorization.

90220219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 90220219 is about 9498.4324496203. The cubic root of 90220219 is about 448.5056919264.

The spelling of 90220219 in words is "ninety million, two hundred twenty thousand, two hundred nineteen".