2227989 has 4 divisors (see below), whose sum is σ = 2970656. Its totient is φ = 1485324.

The previous prime is 2227963. The next prime is 2228011. The reversal of 2227989 is 9897222.

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 not a de Polignac number, because 2227989 - 2¹³ = 2219797 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 2²⁰ + 2²⁰ + 7⁶ + 9⁴ + 8² + 9⁴ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2227919) 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, 371329 + ... + 371334.

It is an arithmetic number, because the mean of its divisors is an integer number (742664).

2^2227989 is an apocalyptic number.

It is an amenable number.

2227989 is a deficient number, since it is larger than the sum of its proper divisors (742667).

2227989 is an equidigital number, since it uses as much as digits as its factorization.

2227989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742666.

The product of its digits is 36288, while the sum is 39.

The square root of 2227989 is about 1492.6449678339. The cubic root of 2227989 is about 130.6083713942.

The spelling of 2227989 in words is "two million, two hundred twenty-seven thousand, nine hundred eighty-nine".