248718239 has 32 divisors (see below), whose sum is σ = 331223040. Its totient is φ = 181036800.

The previous prime is 248718233. The next prime is 248718247. The reversal of 248718239 is 932817842.

It is not a de Polignac number, because 248718239 - 2²⁰ = 247669663 is a prime.

It is a super-2 number, since 2×248718239² = 123721524822522242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 248718239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248718233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67427 + ... + 71019.

It is an arithmetic number, because the mean of its divisors is an integer number (10350720).

Almost surely, 2^248718239 is an apocalyptic number.

248718239 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

248718239 is a deficient number, since it is larger than the sum of its proper divisors (82504801).

248718239 is a wasteful number, since it uses less digits than its factorization.

248718239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671.

The product of its digits is 193536, while the sum is 44.

The square root of 248718239 is about 15770.8033720543. The cubic root of 248718239 is about 628.8820679668.

The spelling of 248718239 in words is "two hundred forty-eight million, seven hundred eighteen thousand, two hundred thirty-nine".