799434521 has 4 divisors (see below), whose sum is σ = 807676212. Its totient is φ = 791192832.

The previous prime is 799434379. The next prime is 799434527. The reversal of 799434521 is 125434997.

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 635594521 + 163840000 = 25211^2 + 12800^2 .

It is a cyclic number.

It is not a de Polignac number, because 799434521 - 2²² = 795240217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799434527) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4120700 + ... + 4120893.

It is an arithmetic number, because the mean of its divisors is an integer number (201919053).

Almost surely, 2^799434521 is an apocalyptic number.

It is an amenable number.

799434521 is a deficient number, since it is larger than the sum of its proper divisors (8241691).

799434521 is an equidigital number, since it uses as much as digits as its factorization.

799434521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241690.

The product of its digits is 272160, while the sum is 44.

The square root of 799434521 is about 28274.2731294723. The cubic root of 799434521 is about 928.0989884157.

The spelling of 799434521 in words is "seven hundred ninety-nine million, four hundred thirty-four thousand, five hundred twenty-one".