1799434409 has 4 divisors (see below), whose sum is σ = 1811511300. Its totient is φ = 1787357520.

The previous prime is 1799434393. The next prime is 1799434421. The reversal of 1799434409 is 9044349971.

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 1123590400 + 675844009 = 33520^2 + 25997^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799434409 - 2⁴ = 1799434393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1799434709) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6038222 + ... + 6038519.

It is an arithmetic number, because the mean of its divisors is an integer number (452877825).

Almost surely, 2^1799434409 is an apocalyptic number.

It is an amenable number.

1799434409 is a deficient number, since it is larger than the sum of its proper divisors (12076891).

1799434409 is a wasteful number, since it uses less digits than its factorization.

1799434409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12076890.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 1799434409 is about 42419.7407936446. The cubic root of 1799434409 is about 1216.3129769266.

The spelling of 1799434409 in words is "one billion, seven hundred ninety-nine million, four hundred thirty-four thousand, four hundred nine".