248887789 has 4 divisors (see below), whose sum is σ = 255614524. Its totient is φ = 242161056.

The previous prime is 248887777. The next prime is 248887801. The reversal of 248887789 is 987788842.

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

It is an interprime number because it is at equal distance from previous prime (248887777) and next prime (248887801).

It can be written as a sum of positive squares in 2 ways, for example, as 115670025 + 133217764 = 10755^2 + 11542^2 .

It is a cyclic number.

It is not a de Polignac number, because 248887789 - 2⁵ = 248887757 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 (248887759) 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, 3363312 + ... + 3363385.

It is an arithmetic number, because the mean of its divisors is an integer number (63903631).

Almost surely, 2^248887789 is an apocalyptic number.

It is an amenable number.

248887789 is a deficient number, since it is larger than the sum of its proper divisors (6726735).

248887789 is an equidigital number, since it uses as much as digits as its factorization.

248887789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6726734.

The product of its digits is 14450688, while the sum is 61.

The square root of 248887789 is about 15776.1778958023. The cubic root of 248887789 is about 629.0249374446.

The spelling of 248887789 in words is "two hundred forty-eight million, eight hundred eighty-seven thousand, seven hundred eighty-nine".