248465989 has 4 divisors (see below), whose sum is σ = 255181324. Its totient is φ = 241750656.

The previous prime is 248465977. The next prime is 248466007. The reversal of 248465989 is 989564842.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154181889 + 94284100 = 12417^2 + 9710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248465989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248465909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357612 + ... + 3357685.

It is an arithmetic number, because the mean of its divisors is an integer number (63795331).

Almost surely, 2^248465989 is an apocalyptic number.

It is an amenable number.

248465989 is a deficient number, since it is larger than the sum of its proper divisors (6715335).

248465989 is an equidigital number, since it uses as much as digits as its factorization.

248465989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715334.

The product of its digits is 4976640, while the sum is 55.

The square root of 248465989 is about 15762.8039701063. The cubic root of 248465989 is about 628.6693920195.

The spelling of 248465989 in words is "two hundred forty-eight million, four hundred sixty-five thousand, nine hundred eighty-nine".