799803121 has 8 divisors (see below), whose sum is σ = 870207464. Its totient is φ = 730667520.

The previous prime is 799803107. The next prime is 799803133. The reversal of 799803121 is 121308997.

It can be written as a sum of positive squares in 4 ways, for example, as 12215025 + 787588096 = 3495^2 + 28064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 799803121 - 2¹⁵ = 799770353 is a prime.

It is a super-2 number, since 2×799803121² = 1279370064722681282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799803101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315870 + ... + 318391.

It is an arithmetic number, because the mean of its divisors is an integer number (108775933).

Almost surely, 2^799803121 is an apocalyptic number.

It is an amenable number.

799803121 is a deficient number, since it is larger than the sum of its proper divisors (70404343).

799803121 is a wasteful number, since it uses less digits than its factorization.

799803121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634371.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 799803121 is about 28280.7906714080. The cubic root of 799803121 is about 928.2416078607.

The spelling of 799803121 in words is "seven hundred ninety-nine million, eight hundred three thousand, one hundred twenty-one".