248392993 has 4 divisors (see below), whose sum is σ = 248554900. Its totient is φ = 248231088.

The previous prime is 248392981. The next prime is 248393011. The reversal of 248392993 is 399293842.

248392993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 178302609 + 70090384 = 13353^2 + 8372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248392993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248392913) 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, 78630 + ... + 81727.

It is an arithmetic number, because the mean of its divisors is an integer number (62138725).

Almost surely, 2^248392993 is an apocalyptic number.

It is an amenable number.

248392993 is a deficient number, since it is larger than the sum of its proper divisors (161907).

248392993 is a wasteful number, since it uses less digits than its factorization.

248392993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161906.

The product of its digits is 839808, while the sum is 49.

The square root of 248392993 is about 15760.4883490328. The cubic root of 248392993 is about 628.6078210900.

The spelling of 248392993 in words is "two hundred forty-eight million, three hundred ninety-two thousand, nine hundred ninety-three".