799638540 has 48 divisors (see below), whose sum is σ = 2241727488. Its totient is φ = 212976064.

The previous prime is 799638509. The next prime is 799638551. The reversal of 799638540 is 45836997.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44059 + ... + 59501.

It is an arithmetic number, because the mean of its divisors is an integer number (46702656).

Almost surely, 2^799638540 is an apocalyptic number.

It is an amenable number.

799638540 is an abundant number, since it is smaller than the sum of its proper divisors (1442088948).

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

799638540 is a wasteful number, since it uses less digits than its factorization.

799638540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16318 (or 16316 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 799638540 is about 28277.8807551061. The cubic root of 799638540 is about 928.1779332687.

The spelling of 799638540 in words is "seven hundred ninety-nine million, six hundred thirty-eight thousand, five hundred forty".