90443473 has 2 divisors, whose sum is σ = 90443474. Its totient is φ = 90443472.

The previous prime is 90443471. The next prime is 90443497. The reversal of 90443473 is 37434409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88679889 + 1763584 = 9417^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 90443473 - 2¹ = 90443471 is a prime.

Together with 90443471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90443471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45221736 + 45221737.

It is an arithmetic number, because the mean of its divisors is an integer number (45221737).

Almost surely, 2^90443473 is an apocalyptic number.

It is an amenable number.

90443473 is a deficient number, since it is larger than the sum of its proper divisors (1).

90443473 is an equidigital number, since it uses as much as digits as its factorization.

90443473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 90443473 is about 9510.1773379890. The cubic root of 90443473 is about 448.8753363793.

The spelling of 90443473 in words is "ninety million, four hundred forty-three thousand, four hundred seventy-three".