90994219 has 2 divisors, whose sum is σ = 90994220. Its totient is φ = 90994218.

The previous prime is 90994159. The next prime is 90994229. The reversal of 90994219 is 91249909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90994219 - 2⁷ = 90994091 is a prime.

It is a super-2 number, since 2×90994219² = 16559895782839922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90994229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45497109 + 45497110.

It is an arithmetic number, because the mean of its divisors is an integer number (45497110).

Almost surely, 2^90994219 is an apocalyptic number.

90994219 is a deficient number, since it is larger than the sum of its proper divisors (1).

90994219 is an equidigital number, since it uses as much as digits as its factorization.

90994219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 90994219 is about 9539.0890026249. The cubic root of 90994219 is about 449.7846195641.

The spelling of 90994219 in words is "ninety million, nine hundred ninety-four thousand, two hundred nineteen".