90385943 has 2 divisors, whose sum is σ = 90385944. Its totient is φ = 90385942.

The previous prime is 90385937. The next prime is 90385993. The reversal of 90385943 is 34958309.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90385943 - 2⁴ = 90385927 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90385943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90385913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45192971 + 45192972.

It is an arithmetic number, because the mean of its divisors is an integer number (45192972).

Almost surely, 2^90385943 is an apocalyptic number.

90385943 is a deficient number, since it is larger than the sum of its proper divisors (1).

90385943 is an equidigital number, since it uses as much as digits as its factorization.

90385943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 90385943 is about 9507.1522024211. The cubic root of 90385943 is about 448.7801414670.

The spelling of 90385943 in words is "ninety million, three hundred eighty-five thousand, nine hundred forty-three".