2189427 has 16 divisors (see below), whose sum is σ = 3121920. Its totient is φ = 1360800.

The previous prime is 2189419. The next prime is 2189459. The reversal of 2189427 is 7249812.

It is a happy number.

It is not a de Polignac number, because 2189427 - 2³ = 2189419 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 8⁷ + 9⁵ + 4⁷ + 2⁵ + 7⁵ .

2189427 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2189417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777 + ... + 4317.

It is an arithmetic number, because the mean of its divisors is an integer number (195120).

2^2189427 is an apocalyptic number.

2189427 is a deficient number, since it is larger than the sum of its proper divisors (932493).

2189427 is a wasteful number, since it uses less digits than its factorization.

2189427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its digits is 8064, while the sum is 33.

The square root of 2189427 is about 1479.6712472708. The cubic root of 2189427 is about 129.8504592108.

The spelling of 2189427 in words is "two million, one hundred eighty-nine thousand, four hundred twenty-seven".