90045443 has 2 divisors, whose sum is σ = 90045444. Its totient is φ = 90045442.

The previous prime is 90045419. The next prime is 90045469. The reversal of 90045443 is 34454009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90045443 - 2¹⁰ = 90044419 is a prime.

It is not a weakly prime, because it can be changed into another prime (90045643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45022721 + 45022722.

It is an arithmetic number, because the mean of its divisors is an integer number (45022722).

Almost surely, 2^90045443 is an apocalyptic number.

90045443 is a deficient number, since it is larger than the sum of its proper divisors (1).

90045443 is an equidigital number, since it uses as much as digits as its factorization.

90045443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 90045443 is about 9489.2277346473. The cubic root of 90045443 is about 448.2158873261.

The spelling of 90045443 in words is "ninety million, forty-five thousand, four hundred forty-three".