87918329 has 2 divisors, whose sum is σ = 87918330. Its totient is φ = 87918328.

The previous prime is 87918307. The next prime is 87918403. The reversal of 87918329 is 92381978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86918329 + 1000000 = 9323^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 87918329 - 2²⁴ = 71141113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87914329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43959164 + 43959165.

It is an arithmetic number, because the mean of its divisors is an integer number (43959165).

Almost surely, 2^87918329 is an apocalyptic number.

It is an amenable number.

87918329 is a deficient number, since it is larger than the sum of its proper divisors (1).

87918329 is an equidigital number, since it uses as much as digits as its factorization.

87918329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 87918329 is about 9376.4774302507. The cubic root of 87918329 is about 444.6583734946.

The spelling of 87918329 in words is "eighty-seven million, nine hundred eighteen thousand, three hundred twenty-nine".