7999087 has 2 divisors, whose sum is σ = 7999088. Its totient is φ = 7999086.

The previous prime is 7999081. The next prime is 7999151. The reversal of 7999087 is 7809997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7999087 - 2¹⁹ = 7474799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7999087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7999081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999543 + 3999544.

It is an arithmetic number, because the mean of its divisors is an integer number (3999544).

Almost surely, 2^7999087 is an apocalyptic number.

7999087 is a deficient number, since it is larger than the sum of its proper divisors (1).

7999087 is an equidigital number, since it uses as much as digits as its factorization.

7999087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 7999087 is about 2828.2657230183. The cubic root of 7999087 is about 199.9923913772.

The spelling of 7999087 in words is "seven million, nine hundred ninety-nine thousand, eighty-seven".