722220439 has 2 divisors, whose sum is σ = 722220440. Its totient is φ = 722220438.

The previous prime is 722220383. The next prime is 722220451. The reversal of 722220439 is 934022227.

722220439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722220439 - 2⁷ = 722220311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722220439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722220139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361110219 + 361110220.

It is an arithmetic number, because the mean of its divisors is an integer number (361110220).

Almost surely, 2^722220439 is an apocalyptic number.

722220439 is a deficient number, since it is larger than the sum of its proper divisors (1).

722220439 is an equidigital number, since it uses as much as digits as its factorization.

722220439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 722220439 is about 26874.1593170838. The cubic root of 722220439 is about 897.2013635936.

The spelling of 722220439 in words is "seven hundred twenty-two million, two hundred twenty thousand, four hundred thirty-nine".