247329 has 6 divisors (see below), whose sum is σ = 357266. Its totient is φ = 164880.

The previous prime is 247309. The next prime is 247337. The reversal of 247329 is 923742.

It can be written as a sum of positive squares in only one way, i.e., 245025 + 2304 = 495^2 + 48^2 .

It is not a de Polignac number, because 247329 - 2⁷ = 247201 is a prime.

It is a super-2 number, since 2×247329² = 122343268482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (247309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13732 + ... + 13749.

2²⁴⁷³²⁹ is an apocalyptic number.

It is an amenable number.

247329 is a deficient number, since it is larger than the sum of its proper divisors (109937).

247329 is a wasteful number, since it uses less digits than its factorization.

247329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27487 (or 27484 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 247329 is about 497.3218273915. The cubic root of 247329 is about 62.7708987917.

It can be divided in two parts, 2473 and 29, that multiplied together give a palindrome (71717).

The spelling of 247329 in words is "two hundred forty-seven thousand, three hundred twenty-nine".