799701840 has 240 divisors, whose sum is σ = 3101694336. Its totient is φ = 180864000.

The previous prime is 799701839. The next prime is 799701863. The reversal of 799701840 is 48107997.

It is a Cunningham number, because it is equal to 28279²-1.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 508255 + ... + 509825.

Almost surely, 2^799701840 is an apocalyptic number.

799701840 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 799701840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550847168).

799701840 is an abundant number, since it is smaller than the sum of its proper divisors (2301992496).

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

799701840 is a wasteful number, since it uses less digits than its factorization.

799701840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 799701840 is about 28278.9999823190. Note that the first 4 decimals coincide. The cubic root of 799701840 is about 928.2024243815.

It can be divided in two parts, 79970 and 1840, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 799701840 in words is "seven hundred ninety-nine million, seven hundred one thousand, eight hundred forty".