909090673 has 2 divisors, whose sum is σ = 909090674. Its totient is φ = 909090672.

The previous prime is 909090671. The next prime is 909090737. The reversal of 909090673 is 376090909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904325184 + 4765489 = 30072^2 + 2183^2 .

It is a cyclic number.

It is not a de Polignac number, because 909090673 - 2¹ = 909090671 is a prime.

Together with 909090671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (909090671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454545336 + 454545337.

It is an arithmetic number, because the mean of its divisors is an integer number (454545337).

Almost surely, 2^909090673 is an apocalyptic number.

It is an amenable number.

909090673 is a deficient number, since it is larger than the sum of its proper divisors (1).

909090673 is an equidigital number, since it uses as much as digits as its factorization.

909090673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 909090673 is about 30151.1305426513. The cubic root of 909090673 is about 968.7292222918.

The spelling of 909090673 in words is "nine hundred nine million, ninety thousand, six hundred seventy-three".