805224239 has 2 divisors, whose sum is σ = 805224240. Its totient is φ = 805224238.

The previous prime is 805224191. The next prime is 805224241. The reversal of 805224239 is 932422508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805224239 - 2⁸ = 805223983 is a prime.

Together with 805224241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 805224199 and 805224208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805224289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402612119 + 402612120.

It is an arithmetic number, because the mean of its divisors is an integer number (402612120).

Almost surely, 2^805224239 is an apocalyptic number.

805224239 is a deficient number, since it is larger than the sum of its proper divisors (1).

805224239 is an equidigital number, since it uses as much as digits as its factorization.

805224239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 805224239 is about 28376.4733361988. The cubic root of 805224239 is about 930.3341147368.

The spelling of 805224239 in words is "eight hundred five million, two hundred twenty-four thousand, two hundred thirty-nine".