799844640 has 288 divisors, whose sum is σ = 3028161024. Its totient is φ = 176762880.

The previous prime is 799844629. The next prime is 799844657. The reversal of 799844640 is 46448997.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 728572 + ... + 729668.

It is an arithmetic number, because the mean of its divisors is an integer number (10514448).

Almost surely, 2^799844640 is an apocalyptic number.

799844640 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 799844640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514080512).

799844640 is an abundant number, since it is smaller than the sum of its proper divisors (2228316384).

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

799844640 is a wasteful number, since it uses less digits than its factorization.

799844640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 799844640 is about 28281.5247113730. The cubic root of 799844640 is about 928.2576697287.

The spelling of 799844640 in words is "seven hundred ninety-nine million, eight hundred forty-four thousand, six hundred forty".