90233863 has 2 divisors, whose sum is σ = 90233864. Its totient is φ = 90233862.

The previous prime is 90233837. The next prime is 90233873. The reversal of 90233863 is 36833209.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90233863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90233813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45116931 + 45116932.

It is an arithmetic number, because the mean of its divisors is an integer number (45116932).

Almost surely, 2^90233863 is an apocalyptic number.

90233863 is a deficient number, since it is larger than the sum of its proper divisors (1).

90233863 is an equidigital number, since it uses as much as digits as its factorization.

90233863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 90233863 is about 9499.1506462420. The cubic root of 90233863 is about 448.5282999525.

The spelling of 90233863 in words is "ninety million, two hundred thirty-three thousand, eight hundred sixty-three".