87994087 has 2 divisors, whose sum is σ = 87994088. Its totient is φ = 87994086.

The previous prime is 87994079. The next prime is 87994133. The reversal of 87994087 is 78049978.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87994087 - 2³ = 87994079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87994007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43997043 + 43997044.

It is an arithmetic number, because the mean of its divisors is an integer number (43997044).

Almost surely, 2^87994087 is an apocalyptic number.

87994087 is a deficient number, since it is larger than the sum of its proper divisors (1).

87994087 is an equidigital number, since it uses as much as digits as its factorization.

87994087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 87994087 is about 9380.5163503935. The cubic root of 87994087 is about 444.7860554708.

The spelling of 87994087 in words is "eighty-seven million, nine hundred ninety-four thousand, eighty-seven".