87492439 has 2 divisors, whose sum is σ = 87492440. Its totient is φ = 87492438.

The previous prime is 87492343. The next prime is 87492443. The reversal of 87492439 is 93429478.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87492439 - 2⁷ = 87492311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87492479) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43746219 + 43746220.

It is an arithmetic number, because the mean of its divisors is an integer number (43746220).

Almost surely, 2^87492439 is an apocalyptic number.

87492439 is a deficient number, since it is larger than the sum of its proper divisors (1).

87492439 is an equidigital number, since it uses as much as digits as its factorization.

87492439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 87492439 is about 9353.7393057536. The cubic root of 87492439 is about 443.9392129941.

The spelling of 87492439 in words is "eighty-seven million, four hundred ninety-two thousand, four hundred thirty-nine".