90019211 has 2 divisors, whose sum is σ = 90019212. Its totient is φ = 90019210.

The previous prime is 90019159. The next prime is 90019249. The reversal of 90019211 is 11291009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90019211 - 2²⁶ = 22910347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90019271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45009605 + 45009606.

It is an arithmetic number, because the mean of its divisors is an integer number (45009606).

Almost surely, 2^90019211 is an apocalyptic number.

90019211 is a deficient number, since it is larger than the sum of its proper divisors (1).

90019211 is an equidigital number, since it uses as much as digits as its factorization.

90019211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 90019211 is about 9487.8454350817. The cubic root of 90019211 is about 448.1723584119.

The spelling of 90019211 in words is "ninety million, nineteen thousand, two hundred eleven".