799999407900 has 1440 divisors, whose sum is σ = 3449731203072. Its totient is φ = 155254579200.

The previous prime is 799999407877. The next prime is 799999407931. The reversal of 799999407900 is 9704999997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 2088771109 + ... + 2088771491.

Almost surely, 2^799999407900 is an apocalyptic number.

799999407900 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799999407900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724865601536).

799999407900 is an abundant number, since it is smaller than the sum of its proper divisors (2649731795172).

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

799999407900 is a wasteful number, since it uses less digits than its factorization.

799999407900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 104162436, while the sum is 72.

The spelling of 799999407900 in words is "seven hundred ninety-nine billion, nine hundred ninety-nine million, four hundred seven thousand, nine hundred".