248739 has 4 divisors (see below), whose sum is σ = 331656. Its totient is φ = 165824.

The previous prime is 248737. The next prime is 248749. The reversal of 248739 is 937842.

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 248739 - 2¹ = 248737 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁸ + 7⁶ + 8⁵ + 3² + 9 .

It is a D-number.

248739 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (248737) 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 3 ways as a sum of consecutive naturals, for example, 41454 + ... + 41459.

It is an arithmetic number, because the mean of its divisors is an integer number (82914).

248739 is a Friedman number, since it can be written as (8+4)^(7-2)-93, using all its digits and the basic arithmetic operations.

2²⁴⁸⁷³⁹ is an apocalyptic number.

248739 is a deficient number, since it is larger than the sum of its proper divisors (82917).

248739 is an equidigital number, since it uses as much as digits as its factorization.

248739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82916.

The product of its digits is 12096, while the sum is 33.

The square root of 248739 is about 498.7374058560. The cubic root of 248739 is about 62.8899565487.

The spelling of 248739 in words is "two hundred forty-eight thousand, seven hundred thirty-nine".