2022397 has 4 divisors (see below), whose sum is σ = 2177980. Its totient is φ = 1866816.

The previous prime is 2022389. The next prime is 2022401. The reversal of 2022397 is 7932202.

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 210681 + 1811716 = 459^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022397 - 2³ = 2022389 is a prime.

It is a Duffinian number.

2022397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77772 + ... + 77797.

It is an arithmetic number, because the mean of its divisors is an integer number (544495).

2^2022397 is an apocalyptic number.

It is an amenable number.

2022397 is a deficient number, since it is larger than the sum of its proper divisors (155583).

2022397 is a wasteful number, since it uses less digits than its factorization.

2022397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155582.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2022397 is about 1422.1100520002. The cubic root of 2022397 is about 126.4606677804.

Adding to 2022397 its reverse (7932202), we get a palindrome (9954599).

The spelling of 2022397 in words is "two million, twenty-two thousand, three hundred ninety-seven".