248709 has 4 divisors (see below), whose sum is σ = 331616. Its totient is φ = 165804.

The previous prime is 248707. The next prime is 248719. The reversal of 248709 is 907842.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 248709 - 2¹ = 248707 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248701) 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, 41449 + ... + 41454.

It is an arithmetic number, because the mean of its divisors is an integer number (82904).

2²⁴⁸⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

248709 is a deficient number, since it is larger than the sum of its proper divisors (82907).

248709 is an equidigital number, since it uses as much as digits as its factorization.

248709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82906.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 248709 is about 498.7073290017. The cubic root of 248709 is about 62.8874280958.

The spelling of 248709 in words is "two hundred forty-eight thousand, seven hundred nine".