622278889 has 4 divisors (see below), whose sum is σ = 622456720. Its totient is φ = 622101060.

The previous prime is 622278887. The next prime is 622278893. The reversal of 622278889 is 988872226.

622278889 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 622278889 - 2¹ = 622278887 is a prime.

It is a super-4 number, since 4×622278889⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622278887) 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, 83559 + ... + 90700.

It is an arithmetic number, because the mean of its divisors is an integer number (155614180).

Almost surely, 2^622278889 is an apocalyptic number.

It is an amenable number.

622278889 is a deficient number, since it is larger than the sum of its proper divisors (177831).

622278889 is a wasteful number, since it uses less digits than its factorization.

622278889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177830.

The product of its digits is 1548288, while the sum is 52.

The square root of 622278889 is about 24945.5184151382. The cubic root of 622278889 is about 853.7453590722.

The spelling of 622278889 in words is "six hundred twenty-two million, two hundred seventy-eight thousand, eight hundred eighty-nine".