2144747 has 4 divisors (see below), whose sum is σ = 2339736. Its totient is φ = 1949760.

The previous prime is 2144743. The next prime is 2144749. The reversal of 2144747 is 7474412.

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 2144747 - 2² = 2144743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144743) 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, 97478 + ... + 97499.

It is an arithmetic number, because the mean of its divisors is an integer number (584934).

2^2144747 is an apocalyptic number.

2144747 is a deficient number, since it is larger than the sum of its proper divisors (194989).

2144747 is a wasteful number, since it uses less digits than its factorization.

2144747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194988.

The product of its digits is 6272, while the sum is 29.

The square root of 2144747 is about 1464.4954762648. The cubic root of 2144747 is about 128.9610883580.

The spelling of 2144747 in words is "two million, one hundred forty-four thousand, seven hundred forty-seven".