799987087 has 4 divisors (see below), whose sum is σ = 800219736. Its totient is φ = 799754440.

The previous prime is 799987057. The next prime is 799987103. The reversal of 799987087 is 780789997.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-799987087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799987057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111088 + ... + 118069.

It is an arithmetic number, because the mean of its divisors is an integer number (200054934).

Almost surely, 2^799987087 is an apocalyptic number.

799987087 is a deficient number, since it is larger than the sum of its proper divisors (232649).

799987087 is a wasteful number, since it uses less digits than its factorization.

799987087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232648.

The product of its (nonzero) digits is 16003008, while the sum is 64.

The square root of 799987087 is about 28284.0429747941. The cubic root of 799987087 is about 928.3127719593.

The spelling of 799987087 in words is "seven hundred ninety-nine million, nine hundred eighty-seven thousand, eighty-seven".