248439817 has 2 divisors, whose sum is σ = 248439818. Its totient is φ = 248439816.

The previous prime is 248439809. The next prime is 248439827. The reversal of 248439817 is 718934842.

248439817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238270096 + 10169721 = 15436^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 248439817 - 2³ = 248439809 is a prime.

It is not a weakly prime, because it can be changed into another prime (248439827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124219908 + 124219909.

It is an arithmetic number, because the mean of its divisors is an integer number (124219909).

Almost surely, 2^248439817 is an apocalyptic number.

It is an amenable number.

248439817 is a deficient number, since it is larger than the sum of its proper divisors (1).

248439817 is an equidigital number, since it uses as much as digits as its factorization.

248439817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 248439817 is about 15761.9737659977. The cubic root of 248439817 is about 628.6473177534.

The spelling of 248439817 in words is "two hundred forty-eight million, four hundred thirty-nine thousand, eight hundred seventeen".