87993263 has 2 divisors, whose sum is σ = 87993264. Its totient is φ = 87993262.

The previous prime is 87993187. The next prime is 87993277. The reversal of 87993263 is 36239978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87993263 - 2²⁰ = 86944687 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87993463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43996631 + 43996632.

It is an arithmetic number, because the mean of its divisors is an integer number (43996632).

Almost surely, 2^87993263 is an apocalyptic number.

87993263 is a deficient number, since it is larger than the sum of its proper divisors (1).

87993263 is an equidigital number, since it uses as much as digits as its factorization.

87993263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 87993263 is about 9380.4724294675. The cubic root of 87993263 is about 444.7846671016.

The spelling of 87993263 in words is "eighty-seven million, nine hundred ninety-three thousand, two hundred sixty-three".