4220197 has 4 divisors (see below), whose sum is σ = 4236876. Its totient is φ = 4203520.

The previous prime is 4220189. The next prime is 4220207. The reversal of 4220197 is 7910224.

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 2056356 + 2163841 = 1434^2 + 1471^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220197 - 2³ = 4220189 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 (4220137) 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, 7954 + ... + 8467.

It is an arithmetic number, because the mean of its divisors is an integer number (1059219).

Almost surely, 2^4220197 is an apocalyptic number.

It is an amenable number.

4220197 is a deficient number, since it is larger than the sum of its proper divisors (16679).

4220197 is a wasteful number, since it uses less digits than its factorization.

4220197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 4220197 is about 2054.3118069076. The cubic root of 4220197 is about 161.6010735192.

The spelling of 4220197 in words is "four million, two hundred twenty thousand, one hundred ninety-seven".