87764459 has 2 divisors, whose sum is σ = 87764460. Its totient is φ = 87764458.

The previous prime is 87764431. The next prime is 87764483. The reversal of 87764459 is 95446778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87764459 - 2²⁰ = 86715883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87764429) 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, 43882229 + 43882230.

It is an arithmetic number, because the mean of its divisors is an integer number (43882230).

Almost surely, 2^87764459 is an apocalyptic number.

87764459 is a deficient number, since it is larger than the sum of its proper divisors (1).

87764459 is an equidigital number, since it uses as much as digits as its factorization.

87764459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 87764459 is about 9368.2687301337. The cubic root of 87764459 is about 444.3988161746.

The spelling of 87764459 in words is "eighty-seven million, seven hundred sixty-four thousand, four hundred fifty-nine".