4220369 has 4 divisors (see below), whose sum is σ = 4468644. Its totient is φ = 3972096.

The previous prime is 4220357. The next prime is 4220387. The reversal of 4220369 is 9630224.

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 2496400 + 1723969 = 1580^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220369 - 2⁴ = 4220353 is a prime.

It is a super-2 number, since 2×4220369² = 35623028992322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4220269) 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, 124112 + ... + 124145.

It is an arithmetic number, because the mean of its divisors is an integer number (1117161).

Almost surely, 2^4220369 is an apocalyptic number.

It is an amenable number.

4220369 is a deficient number, since it is larger than the sum of its proper divisors (248275).

4220369 is a wasteful number, since it uses less digits than its factorization.

4220369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248274.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 4220369 is about 2054.3536696489. The cubic root of 4220369 is about 161.6032689149.

The spelling of 4220369 in words is "four million, two hundred twenty thousand, three hundred sixty-nine".