799413987940 has 24 divisors (see below), whose sum is σ = 1679960895480. Its totient is φ = 319538638848.

The previous prime is 799413987919. The next prime is 799413987949. The reversal of 799413987940 is 49789314997.

It can be written as a sum of positive squares in 4 ways, for example, as 7360267264 + 792053720676 = 85792^2 + 889974^2 .

It is a super-2 number, since 2×799413987940² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 799413987940.

It is not an unprimeable number, because it can be changed into a prime (799413987949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14155887 + ... + 14212246.

It is an arithmetic number, because the mean of its divisors is an integer number (69998370645).

Almost surely, 2^799413987940 is an apocalyptic number.

It is an amenable number.

799413987940 is an abundant number, since it is smaller than the sum of its proper divisors (880546907540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

799413987940 is a wasteful number, since it uses less digits than its factorization.

799413987940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28369551 (or 28369549 counting only the distinct ones).

The product of its (nonzero) digits is 123451776, while the sum is 70.

The spelling of 799413987940 in words is "seven hundred ninety-nine billion, four hundred thirteen million, nine hundred eighty-seven thousand, nine hundred forty".