2149747 has 4 divisors (see below), whose sum is σ = 2152800. Its totient is φ = 2146696.

The previous prime is 2149727. The next prime is 2149781. The reversal of 2149747 is 7479412.

2149747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2149747 - 2⁷ = 2149619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129 + ... + 2077.

It is an arithmetic number, because the mean of its divisors is an integer number (538200).

2^2149747 is an apocalyptic number.

2149747 is a deficient number, since it is larger than the sum of its proper divisors (3053).

2149747 is a wasteful number, since it uses less digits than its factorization.

2149747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052.

The product of its digits is 14112, while the sum is 34.

The square root of 2149747 is about 1466.2015550394. The cubic root of 2149747 is about 129.0612252687.

The spelling of 2149747 in words is "two million, one hundred forty-nine thousand, seven hundred forty-seven".