87263999 has 2 divisors, whose sum is σ = 87264000. Its totient is φ = 87263998.

The previous prime is 87263993. The next prime is 87264029. The reversal of 87263999 is 99936278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87263999 - 2¹² = 87259903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87263999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87263993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43631999 + 43632000.

It is an arithmetic number, because the mean of its divisors is an integer number (43632000).

Almost surely, 2^87263999 is an apocalyptic number.

87263999 is a deficient number, since it is larger than the sum of its proper divisors (1).

87263999 is an equidigital number, since it uses as much as digits as its factorization.

87263999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 87263999 is about 9341.5201653692. The cubic root of 87263999 is about 443.5525058085.

The spelling of 87263999 in words is "eighty-seven million, two hundred sixty-three thousand, nine hundred ninety-nine".