2239747 has 2 divisors, whose sum is σ = 2239748. Its totient is φ = 2239746.

The previous prime is 2239723. The next prime is 2239751. The reversal of 2239747 is 7479322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2239747 - 2¹⁹ = 1715459 is a prime.

2239747 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2239147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119873 + 1119874.

It is an arithmetic number, because the mean of its divisors is an integer number (1119874).

2^2239747 is an apocalyptic number.

2239747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239747 is an equidigital number, since it uses as much as digits as its factorization.

2239747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 2239747 is about 1496.5784309551. The cubic root of 2239747 is about 130.8377261520.

The spelling of 2239747 in words is "two million, two hundred thirty-nine thousand, seven hundred forty-seven".