248956783 has 4 divisors (see below), whose sum is σ = 249009640. Its totient is φ = 248903928.

The previous prime is 248956781. The next prime is 248956787. The reversal of 248956783 is 387659842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387659842 = 2 ⋅193829921.

It is a cyclic number.

It is not a de Polignac number, because 248956783 - 2¹ = 248956781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 248956783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248956781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18588 + ... + 29041.

It is an arithmetic number, because the mean of its divisors is an integer number (62252410).

Almost surely, 2^248956783 is an apocalyptic number.

248956783 is a deficient number, since it is larger than the sum of its proper divisors (52857).

248956783 is an equidigital number, since it uses as much as digits as its factorization.

248956783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52856.

The product of its digits is 2903040, while the sum is 52.

The square root of 248956783 is about 15778.3643955893. The cubic root of 248956783 is about 629.0830559205.

The spelling of 248956783 in words is "two hundred forty-eight million, nine hundred fifty-six thousand, seven hundred eighty-three".