799840520 has 16 divisors (see below), whose sum is σ = 1799641260. Its totient is φ = 319936192.

The previous prime is 799840519. The next prime is 799840523. The reversal of 799840520 is 25048997.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 783664036 + 16176484 = 27994^2 + 4022^2 .

It is not an unprimeable number, because it can be changed into a prime (799840523) 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, 9997967 + ... + 9998046.

Almost surely, 2^799840520 is an apocalyptic number.

It is an amenable number.

799840520 is an abundant number, since it is smaller than the sum of its proper divisors (999800740).

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

799840520 is a wasteful number, since it uses less digits than its factorization.

799840520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19996024 (or 19996020 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 799840520 is about 28281.4518722077. The cubic root of 799840520 is about 928.2560759074.

The spelling of 799840520 in words is "seven hundred ninety-nine million, eight hundred forty thousand, five hundred twenty".