87430879 has 2 divisors, whose sum is σ = 87430880. Its totient is φ = 87430878.

The previous prime is 87430793. The next prime is 87430919. The reversal of 87430879 is 97803478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87430879 - 2⁹ = 87430367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87430379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43715439 + 43715440.

It is an arithmetic number, because the mean of its divisors is an integer number (43715440).

Almost surely, 2^87430879 is an apocalyptic number.

87430879 is a deficient number, since it is larger than the sum of its proper divisors (1).

87430879 is an equidigital number, since it uses as much as digits as its factorization.

87430879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 87430879 is about 9350.4480641304. The cubic root of 87430879 is about 443.8350694805.

The spelling of 87430879 in words is "eighty-seven million, four hundred thirty thousand, eight hundred seventy-nine".