2193947 has 8 divisors (see below), whose sum is σ = 2616576. Its totient is φ = 1798632.

The previous prime is 2193943. The next prime is 2193953. The reversal of 2193947 is 7493912.

2193947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2193947 - 2² = 2193943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193941) 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 7 ways as a sum of consecutive naturals, for example, 6653 + ... + 6974.

It is an arithmetic number, because the mean of its divisors is an integer number (327072).

2^2193947 is an apocalyptic number.

2193947 is a deficient number, since it is larger than the sum of its proper divisors (422629).

2193947 is a wasteful number, since it uses less digits than its factorization.

2193947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13657.

The product of its digits is 13608, while the sum is 35.

The square root of 2193947 is about 1481.1978260854. The cubic root of 2193947 is about 129.9397551230.

Subtracting from 2193947 its sum of digits (35), we obtain a palindrome (2193912).

The spelling of 2193947 in words is "two million, one hundred ninety-three thousand, nine hundred forty-seven".