214904803409 has 4 divisors (see below), whose sum is σ = 216876407220. Its totient is φ = 212933199600.

The previous prime is 214904803361. The next prime is 214904803439. The reversal of 214904803409 is 904308409412.

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 76312405009 + 138592398400 = 276247^2 + 372280^2 .

It is a cyclic number.

It is not a de Polignac number, because 214904803409 - 2²⁰ = 214903754833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214904803409.

It is not an unprimeable number, because it can be changed into a prime (214904803439) 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, 985801742 + ... + 985801959.

It is an arithmetic number, because the mean of its divisors is an integer number (54219101805).

Almost surely, 2^214904803409 is an apocalyptic number.

It is an amenable number.

214904803409 is a deficient number, since it is larger than the sum of its proper divisors (1971603811).

214904803409 is a wasteful number, since it uses less digits than its factorization.

214904803409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971603810.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 214904803409 in words is "two hundred fourteen billion, nine hundred four million, eight hundred three thousand, four hundred nine".