248702939 has 2 divisors, whose sum is σ = 248702940. Its totient is φ = 248702938.

The previous prime is 248702929. The next prime is 248702941. The reversal of 248702939 is 939207842.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248702939 is a prime.

It is a Sophie Germain prime.

Together with 248702941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 248702939.

It is not a weakly prime, because it can be changed into another prime (248702929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124351469 + 124351470.

It is an arithmetic number, because the mean of its divisors is an integer number (124351470).

Almost surely, 2^248702939 is an apocalyptic number.

248702939 is a deficient number, since it is larger than the sum of its proper divisors (1).

248702939 is an equidigital number, since it uses as much as digits as its factorization.

248702939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 248702939 is about 15770.3182910175. The cubic root of 248702939 is about 628.8691723933.

The spelling of 248702939 in words is "two hundred forty-eight million, seven hundred two thousand, nine hundred thirty-nine".