90909059 has 2 divisors, whose sum is σ = 90909060. Its totient is φ = 90909058.

The previous prime is 90909031. The next prime is 90909061. The reversal of 90909059 is 95090909.

It is a strong prime.

It is an emirp because it is prime and its reverse (95090909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90909059 - 2⁸ = 90908803 is a prime.

Together with 90909061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90909089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45454529 + 45454530.

It is an arithmetic number, because the mean of its divisors is an integer number (45454530).

Almost surely, 2^90909059 is an apocalyptic number.

90909059 is a deficient number, since it is larger than the sum of its proper divisors (1).

90909059 is an equidigital number, since it uses as much as digits as its factorization.

90909059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32805, while the sum is 41.

The square root of 90909059 is about 9534.6242191289. The cubic root of 90909059 is about 449.6442604142.

The spelling of 90909059 in words is "ninety million, nine hundred nine thousand, fifty-nine".