247479 has 4 divisors (see below), whose sum is σ = 329976. Its totient is φ = 164984.

The previous prime is 247463. The next prime is 247501. The reversal of 247479 is 974742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 247479 - 2⁴ = 247463 is a prime.

It is a super-2 number, since 2×247479² = 122491710882, which contains 22 as substring.

It is a D-number.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41244 + ... + 41249.

It is an arithmetic number, because the mean of its divisors is an integer number (82494).

2²⁴⁷⁴⁷⁹ is an apocalyptic number.

247479 is a deficient number, since it is larger than the sum of its proper divisors (82497).

247479 is an equidigital number, since it uses as much as digits as its factorization.

247479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82496.

The product of its digits is 14112, while the sum is 33.

The square root of 247479 is about 497.4726123115. The cubic root of 247479 is about 62.7835859844.

Adding to 247479 its reverse (974742), we get a palindrome (1222221).

It can be divided in two parts, 24 and 7479, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 247479 in words is "two hundred forty-seven thousand, four hundred seventy-nine".