90226949 has 2 divisors, whose sum is σ = 90226950. Its totient is φ = 90226948.

The previous prime is 90226931. The next prime is 90226987. The reversal of 90226949 is 94962209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89434849 + 792100 = 9457^2 + 890^2 .

It is a cyclic number.

It is not a de Polignac number, because 90226949 - 2²⁰ = 89178373 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90226049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45113474 + 45113475.

It is an arithmetic number, because the mean of its divisors is an integer number (45113475).

Almost surely, 2^90226949 is an apocalyptic number.

It is an amenable number.

90226949 is a deficient number, since it is larger than the sum of its proper divisors (1).

90226949 is an equidigital number, since it uses as much as digits as its factorization.

90226949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 90226949 is about 9498.7867119964. The cubic root of 90226949 is about 448.5168437809.

The spelling of 90226949 in words is "ninety million, two hundred twenty-six thousand, nine hundred forty-nine".