247339 has 2 divisors, whose sum is σ = 247340. Its totient is φ = 247338.

The previous prime is 247337. The next prime is 247343. The reversal of 247339 is 933742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247339 - 2¹ = 247337 is a prime.

It is a super-2 number, since 2×247339² = 122353161842, which contains 22 as substring.

Together with 247337, it forms a pair of twin primes.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (247337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123669 + 123670.

It is an arithmetic number, because the mean of its divisors is an integer number (123670).

2²⁴⁷³³⁹ is an apocalyptic number.

247339 is a deficient number, since it is larger than the sum of its proper divisors (1).

247339 is an equidigital number, since it uses as much as digits as its factorization.

247339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 247339 is about 497.3318811418. The cubic root of 247339 is about 62.7717447641.

It can be divided in two parts, 24733 and 9, that added together give a palindrome (24742).

The spelling of 247339 in words is "two hundred forty-seven thousand, three hundred thirty-nine".