87434887 has 2 divisors, whose sum is σ = 87434888. Its totient is φ = 87434886.

The previous prime is 87434869. The next prime is 87434917. The reversal of 87434887 is 78843478.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87434887 - 2⁷ = 87434759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87434887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87434857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43717443 + 43717444.

It is an arithmetic number, because the mean of its divisors is an integer number (43717444).

Almost surely, 2^87434887 is an apocalyptic number.

87434887 is a deficient number, since it is larger than the sum of its proper divisors (1).

87434887 is an equidigital number, since it uses as much as digits as its factorization.

87434887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1204224, while the sum is 49.

The square root of 87434887 is about 9350.6623829545. The cubic root of 87434887 is about 443.8418514619.

The spelling of 87434887 in words is "eighty-seven million, four hundred thirty-four thousand, eight hundred eighty-seven".