248981839 has 2 divisors, whose sum is σ = 248981840. Its totient is φ = 248981838.

The previous prime is 248981783. The next prime is 248981891. The reversal of 248981839 is 938189842.

It is an a-pointer prime, because the next prime (248981891) can be obtained adding 248981839 to its sum of digits (52).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248981839 - 2¹¹ = 248979791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248987839) 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 as a sum of consecutive naturals, namely, 124490919 + 124490920.

It is an arithmetic number, because the mean of its divisors is an integer number (124490920).

Almost surely, 2^248981839 is an apocalyptic number.

248981839 is a deficient number, since it is larger than the sum of its proper divisors (1).

248981839 is an equidigital number, since it uses as much as digits as its factorization.

248981839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 52.

The square root of 248981839 is about 15779.1583742607. The cubic root of 248981839 is about 629.1041596855.

The spelling of 248981839 in words is "two hundred forty-eight million, nine hundred eighty-one thousand, eight hundred thirty-nine".