802424424209 has 4 divisors (see below), whose sum is σ = 802446764004. Its totient is φ = 802402084416.

The previous prime is 802424424167. The next prime is 802424424211. The reversal of 802424424209 is 902424424208.

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 668886801025 + 133537623184 = 817855^2 + 365428^2 .

It is a cyclic number.

It is not a de Polignac number, because 802424424209 - 2⁸ = 802424423953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (802424424259) 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, 11115932 + ... + 11187885.

It is an arithmetic number, because the mean of its divisors is an integer number (200611691001).

Almost surely, 2^802424424209 is an apocalyptic number.

It is an amenable number.

802424424209 is a deficient number, since it is larger than the sum of its proper divisors (22339795).

802424424209 is a wasteful number, since it uses less digits than its factorization.

802424424209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22339794.

The product of its (nonzero) digits is 294912, while the sum is 41.

Subtracting 802424424209 from its reverse (902424424208), we obtain a palindrome (99999999999).

The spelling of 802424424209 in words is "eight hundred two billion, four hundred twenty-four million, four hundred twenty-four thousand, two hundred nine".