248617969 has 2 divisors, whose sum is σ = 248617970. Its totient is φ = 248617968.

The previous prime is 248617949. The next prime is 248617981. The reversal of 248617969 is 969716842.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209091600 + 39526369 = 14460^2 + 6287^2 .

It is a cyclic number.

It is not a de Polignac number, because 248617969 - 2²¹ = 246520817 is a prime.

It is a super-2 number, since 2×248617969² = 123621789019369922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (248617949) 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, 124308984 + 124308985.

It is an arithmetic number, because the mean of its divisors is an integer number (124308985).

Almost surely, 2^248617969 is an apocalyptic number.

It is an amenable number.

248617969 is a deficient number, since it is larger than the sum of its proper divisors (1).

248617969 is an equidigital number, since it uses as much as digits as its factorization.

248617969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 248617969 is about 15767.6240759348. The cubic root of 248617969 is about 628.7975459778.

The spelling of 248617969 in words is "two hundred forty-eight million, six hundred seventeen thousand, nine hundred sixty-nine".