90012269 has 2 divisors, whose sum is σ = 90012270. Its totient is φ = 90012268.

The previous prime is 90012257. The next prime is 90012281. The reversal of 90012269 is 96221009.

It is a balanced prime because it is at equal distance from previous prime (90012257) and next prime (90012281).

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 44382244 = 6755^2 + 6662^2 .

It is an emirp because it is prime and its reverse (96221009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90012269 - 2¹² = 90008173 is a prime.

It is a super-2 number, since 2×90012269² = 16204417141056722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90012239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45006134 + 45006135.

It is an arithmetic number, because the mean of its divisors is an integer number (45006135).

Almost surely, 2^90012269 is an apocalyptic number.

It is an amenable number.

90012269 is a deficient number, since it is larger than the sum of its proper divisors (1).

90012269 is an equidigital number, since it uses as much as digits as its factorization.

90012269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 90012269 is about 9487.4795915459. The cubic root of 90012269 is about 448.1608375656.

The spelling of 90012269 in words is "ninety million, twelve thousand, two hundred sixty-nine".