787951799 has 4 divisors (see below), whose sum is σ = 796805280. Its totient is φ = 779098320.

The previous prime is 787951739. The next prime is 787951807. The reversal of 787951799 is 997159787.

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

It is a cyclic number.

It is not a de Polignac number, because 787951799 - 2¹⁶ = 787886263 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 (787951709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4426607 + ... + 4426784.

It is an arithmetic number, because the mean of its divisors is an integer number (199201320).

Almost surely, 2^787951799 is an apocalyptic number.

787951799 is a deficient number, since it is larger than the sum of its proper divisors (8853481).

787951799 is an equidigital number, since it uses as much as digits as its factorization.

787951799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853480.

The product of its digits is 10001880, while the sum is 62.

The square root of 787951799 is about 28070.4791373428. The cubic root of 787951799 is about 923.6339413007.

The spelling of 787951799 in words is "seven hundred eighty-seven million, nine hundred fifty-one thousand, seven hundred ninety-nine".