622286389 has 4 divisors (see below), whose sum is σ = 623648524. Its totient is φ = 620924256.

The previous prime is 622286369. The next prime is 622286407. The reversal of 622286389 is 983682226.

It is a happy number.

622286389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 451775025 + 170511364 = 21255^2 + 13058^2 .

It is a cyclic number.

It is not a de Polignac number, because 622286389 - 2⁷ = 622286261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622286359) 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, 680382 + ... + 681295.

It is an arithmetic number, because the mean of its divisors is an integer number (155912131).

Almost surely, 2^622286389 is an apocalyptic number.

It is an amenable number.

622286389 is a deficient number, since it is larger than the sum of its proper divisors (1362135).

622286389 is a wasteful number, since it uses less digits than its factorization.

622286389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362134.

The product of its digits is 497664, while the sum is 46.

The square root of 622286389 is about 24945.6687422887. The cubic root of 622286389 is about 853.7487889729.

The spelling of 622286389 in words is "six hundred twenty-two million, two hundred eighty-six thousand, three hundred eighty-nine".