4022509 has 4 divisors (see below), whose sum is σ = 4234240. Its totient is φ = 3810780.

The previous prime is 4022507. The next prime is 4022549. The reversal of 4022509 is 9052204.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 4022509 - 2¹ = 4022507 is a prime.

It is a Duffinian number.

4022509 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4022509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105837 + ... + 105874.

It is an arithmetic number, because the mean of its divisors is an integer number (1058560).

Almost surely, 2^4022509 is an apocalyptic number.

It is an amenable number.

4022509 is a deficient number, since it is larger than the sum of its proper divisors (211731).

4022509 is a wasteful number, since it uses less digits than its factorization.

4022509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211730.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 4022509 is about 2005.6193557104. The cubic root of 4022509 is about 159.0373051715.

The spelling of 4022509 in words is "four million, twenty-two thousand, five hundred nine".