248957987 has 4 divisors (see below), whose sum is σ = 249031536. Its totient is φ = 248884440.

The previous prime is 248957983. The next prime is 248957999. The reversal of 248957987 is 789759842.

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

It is a cyclic number.

It is not a de Polignac number, because 248957987 - 2² = 248957983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248957981) 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, 31439 + ... + 38552.

It is an arithmetic number, because the mean of its divisors is an integer number (62257884).

Almost surely, 2^248957987 is an apocalyptic number.

248957987 is a deficient number, since it is larger than the sum of its proper divisors (73549).

248957987 is an equidigital number, since it uses as much as digits as its factorization.

248957987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73548.

The product of its digits is 10160640, while the sum is 59.

The square root of 248957987 is about 15778.4025490542. The cubic root of 248957987 is about 629.0840700387.

The spelling of 248957987 in words is "two hundred forty-eight million, nine hundred fifty-seven thousand, nine hundred eighty-seven".