799756321 has 16 divisors (see below), whose sum is σ = 1016071168. Its totient is φ = 612360000.

The previous prime is 799756297. The next prime is 799756333. The reversal of 799756321 is 123657997.

It is not a de Polignac number, because 799756321 - 2⁵ = 799756289 is a prime.

It is a super-2 number, since 2×799756321² = 1279220345958910082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (799756351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138930 + ... + 144571.

It is an arithmetic number, because the mean of its divisors is an integer number (63504448).

Almost surely, 2^799756321 is an apocalyptic number.

It is an amenable number.

799756321 is a deficient number, since it is larger than the sum of its proper divisors (216314847).

799756321 is a wasteful number, since it uses less digits than its factorization.

799756321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283552.

The product of its digits is 714420, while the sum is 49.

The square root of 799756321 is about 28279.9632425504. The cubic root of 799756321 is about 928.2235023405.

It can be divided in two parts, 7997563 and 21, that added together give a square (7997584 = 2828²).

The spelling of 799756321 in words is "seven hundred ninety-nine million, seven hundred fifty-six thousand, three hundred twenty-one".