248740913 has 6 divisors (see below), whose sum is σ = 262521954. Its totient is φ = 235648944.

The previous prime is 248740907. The next prime is 248740927. The reversal of 248740913 is 319047842.

It can be written as a sum of positive squares in only one way, i.e., 229310449 + 19430464 = 15143^2 + 4408^2 .

It is not a de Polignac number, because 248740913 - 2⁴ = 248740897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (248740213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 344156 + ... + 344877.

It is an arithmetic number, because the mean of its divisors is an integer number (43753659).

Almost surely, 2^248740913 is an apocalyptic number.

It is an amenable number.

248740913 is a deficient number, since it is larger than the sum of its proper divisors (13781041).

248740913 is an equidigital number, since it uses as much as digits as its factorization.

248740913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689071 (or 689052 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 248740913 is about 15771.5222156899. The cubic root of 248740913 is about 628.9011777283.

The spelling of 248740913 in words is "two hundred forty-eight million, seven hundred forty thousand, nine hundred thirteen".