4220465 has 4 divisors (see below), whose sum is σ = 5064564. Its totient is φ = 3376368.

The previous prime is 4220449. The next prime is 4220473. The reversal of 4220465 is 5640224.

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 3236401 + 984064 = 1799^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220465 - 2⁴ = 4220449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4220465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422042 + ... + 422051.

It is an arithmetic number, because the mean of its divisors is an integer number (1266141).

Almost surely, 2^4220465 is an apocalyptic number.

It is an amenable number.

4220465 is a deficient number, since it is larger than the sum of its proper divisors (844099).

4220465 is an equidigital number, since it uses as much as digits as its factorization.

4220465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844098.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4220465 is about 2054.3770345290. The cubic root of 4220465 is about 161.6044942261.

Adding to 4220465 its reverse (5640224), we get a palindrome (9860689).

The spelling of 4220465 in words is "four million, two hundred twenty thousand, four hundred sixty-five".