90454669 has 2 divisors, whose sum is σ = 90454670. Its totient is φ = 90454668.

The previous prime is 90454619. The next prime is 90454673. The reversal of 90454669 is 96645409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87665769 + 2788900 = 9363^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 90454669 - 2⁷ = 90454541 is a prime.

It is a super-2 number, since 2×90454669² = 16364094287799122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90454619) 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, 45227334 + 45227335.

It is an arithmetic number, because the mean of its divisors is an integer number (45227335).

Almost surely, 2^90454669 is an apocalyptic number.

It is an amenable number.

90454669 is a deficient number, since it is larger than the sum of its proper divisors (1).

90454669 is an equidigital number, since it uses as much as digits as its factorization.

90454669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 90454669 is about 9510.7659523300. The cubic root of 90454669 is about 448.8938577118.

The spelling of 90454669 in words is "ninety million, four hundred fifty-four thousand, six hundred sixty-nine".