248593109 has 4 divisors (see below), whose sum is σ = 251386380. Its totient is φ = 245799840.

The previous prime is 248593099. The next prime is 248593151. The reversal of 248593109 is 901395842.

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 110460100 + 138133009 = 10510^2 + 11753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248593109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248593409) 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, 1396502 + ... + 1396679.

It is an arithmetic number, because the mean of its divisors is an integer number (62846595).

Almost surely, 2^248593109 is an apocalyptic number.

It is an amenable number.

248593109 is a deficient number, since it is larger than the sum of its proper divisors (2793271).

248593109 is an equidigital number, since it uses as much as digits as its factorization.

248593109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793270.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 248593109 is about 15766.8357320041. The cubic root of 248593109 is about 628.7765868759.

The spelling of 248593109 in words is "two hundred forty-eight million, five hundred ninety-three thousand, one hundred nine".