2194147 has 4 divisors (see below), whose sum is σ = 2235600. Its totient is φ = 2152696.

The previous prime is 2194133. The next prime is 2194187. The reversal of 2194147 is 7414912.

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

It is a cyclic number.

It is not a de Polignac number, because 2194147 - 2⁷ = 2194019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2194187) 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, 20647 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (558900).

2^2194147 is an apocalyptic number.

2194147 is a deficient number, since it is larger than the sum of its proper divisors (41453).

2194147 is an equidigital number, since it uses as much as digits as its factorization.

2194147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41452.

The product of its digits is 2016, while the sum is 28.

The square root of 2194147 is about 1481.2653374733. The cubic root of 2194147 is about 129.9437034349.

The spelling of 2194147 in words is "two million, one hundred ninety-four thousand, one hundred forty-seven".