90442063 has 2 divisors, whose sum is σ = 90442064. Its totient is φ = 90442062.

The previous prime is 90442043. The next prime is 90442069. The reversal of 90442063 is 36024409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90442063 - 2¹⁷ = 90310991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90442069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45221031 + 45221032.

It is an arithmetic number, because the mean of its divisors is an integer number (45221032).

Almost surely, 2^90442063 is an apocalyptic number.

90442063 is a deficient number, since it is larger than the sum of its proper divisors (1).

90442063 is an equidigital number, since it uses as much as digits as its factorization.

90442063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 90442063 is about 9510.1032065903. The cubic root of 90442063 is about 448.8730037344.

The spelling of 90442063 in words is "ninety million, four hundred forty-two thousand, sixty-three".