90876287 has 2 divisors, whose sum is σ = 90876288. Its totient is φ = 90876286.

The previous prime is 90876281. The next prime is 90876301. The reversal of 90876287 is 78267809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90876287 - 2¹⁰ = 90875263 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90876281) 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, 45438143 + 45438144.

It is an arithmetic number, because the mean of its divisors is an integer number (45438144).

Almost surely, 2^90876287 is an apocalyptic number.

90876287 is a deficient number, since it is larger than the sum of its proper divisors (1).

90876287 is an equidigital number, since it uses as much as digits as its factorization.

90876287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 90876287 is about 9532.9054857373. The cubic root of 90876287 is about 449.5902228485.

The spelling of 90876287 in words is "ninety million, eight hundred seventy-six thousand, two hundred eighty-seven".