2447399 has 2 divisors, whose sum is σ = 2447400. Its totient is φ = 2447398.

The previous prime is 2447369. The next prime is 2447437. The reversal of 2447399 is 9937442.

It is an a-pointer prime, because the next prime (2447437) can be obtained adding 2447399 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2447399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223699 + 1223700.

It is an arithmetic number, because the mean of its divisors is an integer number (1223700).

2^2447399 is an apocalyptic number.

2447399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447399 is an equidigital number, since it uses as much as digits as its factorization.

2447399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 2447399 is about 1564.4165046432. The cubic root of 2447399 is about 134.7622518729.

The spelling of 2447399 in words is "two million, four hundred forty-seven thousand, three hundred ninety-nine".