799005421 has 4 divisors (see below), whose sum is σ = 807983100. Its totient is φ = 790027744.

The previous prime is 799005413. The next prime is 799005443. The reversal of 799005421 is 124500997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 193599396 + 605406025 = 13914^2 + 24605^2 .

It is a cyclic number.

It is not a de Polignac number, because 799005421 - 2³ = 799005413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799005401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4488706 + ... + 4488883.

It is an arithmetic number, because the mean of its divisors is an integer number (201995775).

Almost surely, 2^799005421 is an apocalyptic number.

It is an amenable number.

799005421 is a deficient number, since it is larger than the sum of its proper divisors (8977679).

799005421 is an equidigital number, since it uses as much as digits as its factorization.

799005421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977678.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 799005421 is about 28266.6839406394. The cubic root of 799005421 is about 927.9329049570.

The spelling of 799005421 in words is "seven hundred ninety-nine million, five thousand, four hundred twenty-one".