720022439 has 2 divisors, whose sum is σ = 720022440. Its totient is φ = 720022438.

The previous prime is 720022417. The next prime is 720022447. The reversal of 720022439 is 934220027.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720022439 - 2¹⁶ = 719956903 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 (720022739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360011219 + 360011220.

It is an arithmetic number, because the mean of its divisors is an integer number (360011220).

Almost surely, 2^720022439 is an apocalyptic number.

720022439 is a deficient number, since it is larger than the sum of its proper divisors (1).

720022439 is an equidigital number, since it uses as much as digits as its factorization.

720022439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 720022439 is about 26833.2338528177. The cubic root of 720022439 is about 896.2902601630.

The spelling of 720022439 in words is "seven hundred twenty million, twenty-two thousand, four hundred thirty-nine".