90940163 has 2 divisors, whose sum is σ = 90940164. Its totient is φ = 90940162.

The previous prime is 90940151. The next prime is 90940169. The reversal of 90940163 is 36104909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90940163 - 2⁴ = 90940147 is a prime.

It is a super-2 number, since 2×90940163² = 16540226492933138, which contains 22 as substring.

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 (90940169) 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, 45470081 + 45470082.

It is an arithmetic number, because the mean of its divisors is an integer number (45470082).

Almost surely, 2^90940163 is an apocalyptic number.

90940163 is a deficient number, since it is larger than the sum of its proper divisors (1).

90940163 is an equidigital number, since it uses as much as digits as its factorization.

90940163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90940163 is about 9536.2551874412. The cubic root of 90940163 is about 449.6955356134.

The spelling of 90940163 in words is "ninety million, nine hundred forty thousand, one hundred sixty-three".