2169147 has 4 divisors (see below), whose sum is σ = 2892200. Its totient is φ = 1446096.

The previous prime is 2169143. The next prime is 2169151. The reversal of 2169147 is 7419612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2169143) and next prime (2169151).

It is not a de Polignac number, because 2169147 - 2² = 2169143 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2169143) 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, 361522 + ... + 361527.

It is an arithmetic number, because the mean of its divisors is an integer number (723050).

2^2169147 is an apocalyptic number.

2169147 is a deficient number, since it is larger than the sum of its proper divisors (723053).

2169147 is an equidigital number, since it uses as much as digits as its factorization.

2169147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723052.

The product of its digits is 3024, while the sum is 30.

The square root of 2169147 is about 1472.8024307422. The cubic root of 2169147 is about 129.4482930873.

The spelling of 2169147 in words is "two million, one hundred sixty-nine thousand, one hundred forty-seven".