2947393 has 4 divisors (see below), whose sum is σ = 2952148. Its totient is φ = 2942640.

The previous prime is 2947363. The next prime is 2947403. The reversal of 2947393 is 3937492.

2947393 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 1329409 = 1272^2 + 1153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2947393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2947333) 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, 1278 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (738037).

2^2947393 is an apocalyptic number.

It is an amenable number.

2947393 is a deficient number, since it is larger than the sum of its proper divisors (4755).

2947393 is an equidigital number, since it uses as much as digits as its factorization.

2947393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754.

The product of its digits is 40824, while the sum is 37.

The square root of 2947393 is about 1716.7973089448. The cubic root of 2947393 is about 143.3769538530.

Subtracting 2947393 from its reverse (3937492), we obtain a palindrome (990099).

The spelling of 2947393 in words is "two million, nine hundred forty-seven thousand, three hundred ninety-three".