2447239 has 2 divisors, whose sum is σ = 2447240. Its totient is φ = 2447238.

The previous prime is 2447209. The next prime is 2447251. The reversal of 2447239 is 9327442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2447239 - 2⁷ = 2447111 is a prime.

2447239 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2447239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223619 + 1223620.

It is an arithmetic number, because the mean of its divisors is an integer number (1223620).

2^2447239 is an apocalyptic number.

2447239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447239 is an equidigital number, since it uses as much as digits as its factorization.

2447239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 2447239 is about 1564.3653665305. The cubic root of 2447239 is about 134.7593150911.

The spelling of 2447239 in words is "two million, four hundred forty-seven thousand, two hundred thirty-nine".