90119009 has 2 divisors, whose sum is σ = 90119010. Its totient is φ = 90119008.

The previous prime is 90118981. The next prime is 90119063. The reversal of 90119009 is 90091109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 8614225 = 9028^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 90119009 - 2⁸ = 90118753 is a prime.

It is a super-3 number, since 3×90119009³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (90119089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45059504 + 45059505.

It is an arithmetic number, because the mean of its divisors is an integer number (45059505).

Almost surely, 2^90119009 is an apocalyptic number.

It is an amenable number.

90119009 is a deficient number, since it is larger than the sum of its proper divisors (1).

90119009 is an equidigital number, since it uses as much as digits as its factorization.

90119009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 90119009 is about 9493.1032334006. The cubic root of 90119009 is about 448.3379163569.

The spelling of 90119009 in words is "ninety million, one hundred nineteen thousand, nine".