622193889 has 4 divisors (see below), whose sum is σ = 829591856. Its totient is φ = 414795924.

The previous prime is 622193867. The next prime is 622193899. The reversal of 622193889 is 988391226.

622193889 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 not a de Polignac number, because 622193889 - 2¹² = 622189793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (622193899) 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, 103698979 + ... + 103698984.

It is an arithmetic number, because the mean of its divisors is an integer number (207397964).

Almost surely, 2^622193889 is an apocalyptic number.

It is an amenable number.

622193889 is a deficient number, since it is larger than the sum of its proper divisors (207397967).

622193889 is a wasteful number, since it uses less digits than its factorization.

622193889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207397966.

The product of its digits is 373248, while the sum is 48.

The square root of 622193889 is about 24943.8146441157. The cubic root of 622193889 is about 853.7064849376.

The spelling of 622193889 in words is "six hundred twenty-two million, one hundred ninety-three thousand, eight hundred eighty-nine".