247499 has 6 divisors (see below), whose sum is σ = 287964. Its totient is φ = 212100.

The previous prime is 247463. The next prime is 247501. The reversal of 247499 is 994742.

It is not a de Polignac number, because 247499 - 2¹² = 243403 is a prime.

It is a super-2 number, since 2×247499² = 122511510002, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247499.

It is not an unprimeable number, because it can be changed into a prime (247409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2477 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (47994).

2²⁴⁷⁴⁹⁹ is an apocalyptic number.

247499 is a deficient number, since it is larger than the sum of its proper divisors (40465).

247499 is an equidigital number, since it uses as much as digits as its factorization.

247499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065 (or 5058 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 247499 is about 497.4927135145. The cubic root of 247499 is about 62.7852772227.

The spelling of 247499 in words is "two hundred forty-seven thousand, four hundred ninety-nine".