90946169 has 2 divisors, whose sum is σ = 90946170. Its totient is φ = 90946168.

The previous prime is 90946153. The next prime is 90946201. The reversal of 90946169 is 96164909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71910400 + 19035769 = 8480^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 90946169 - 2⁴ = 90946153 is a prime.

It is a super-2 number, since 2×90946169² = 16542411311553122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90946109) 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, 45473084 + 45473085.

It is an arithmetic number, because the mean of its divisors is an integer number (45473085).

Almost surely, 2^90946169 is an apocalyptic number.

It is an amenable number.

90946169 is a deficient number, since it is larger than the sum of its proper divisors (1).

90946169 is an equidigital number, since it uses as much as digits as its factorization.

90946169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 90946169 is about 9536.5700857279. The cubic root of 90946169 is about 449.7054352069.

The spelling of 90946169 in words is "ninety million, nine hundred forty-six thousand, one hundred sixty-nine".