90433457 has 2 divisors, whose sum is σ = 90433458. Its totient is φ = 90433456.

The previous prime is 90433411. The next prime is 90433459. The reversal of 90433457 is 75433409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52475536 + 37957921 = 7244^2 + 6161^2 .

It is a cyclic number.

It is not a de Polignac number, because 90433457 - 2⁸ = 90433201 is a prime.

Together with 90433459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90433459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45216728 + 45216729.

It is an arithmetic number, because the mean of its divisors is an integer number (45216729).

Almost surely, 2^90433457 is an apocalyptic number.

It is an amenable number.

90433457 is a deficient number, since it is larger than the sum of its proper divisors (1).

90433457 is an equidigital number, since it uses as much as digits as its factorization.

90433457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 90433457 is about 9509.6507296535. The cubic root of 90433457 is about 448.8587658032.

The spelling of 90433457 in words is "ninety million, four hundred thirty-three thousand, four hundred fifty-seven".