801223439 has 2 divisors, whose sum is σ = 801223440. Its totient is φ = 801223438.

The previous prime is 801223433. The next prime is 801223459. The reversal of 801223439 is 934322108.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801223439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801223433) 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 as a sum of consecutive naturals, namely, 400611719 + 400611720.

It is an arithmetic number, because the mean of its divisors is an integer number (400611720).

Almost surely, 2^801223439 is an apocalyptic number.

801223439 is a deficient number, since it is larger than the sum of its proper divisors (1).

801223439 is an equidigital number, since it uses as much as digits as its factorization.

801223439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 801223439 is about 28305.8905353638. The cubic root of 801223439 is about 928.7907507599.

The spelling of 801223439 in words is "eight hundred one million, two hundred twenty-three thousand, four hundred thirty-nine".