248808991 has 8 divisors (see below), whose sum is σ = 265215600. Its totient is φ = 232599168.

The previous prime is 248808983. The next prime is 248809003. The reversal of 248808991 is 199808842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 248808991 - 2³ = 248808983 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 (248808961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46581 + ... + 51646.

It is an arithmetic number, because the mean of its divisors is an integer number (33151950).

Almost surely, 2^248808991 is an apocalyptic number.

248808991 is a deficient number, since it is larger than the sum of its proper divisors (16406609).

248808991 is a wasteful number, since it uses less digits than its factorization.

248808991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98393.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 248808991 is about 15773.6803251492. The cubic root of 248808991 is about 628.9585472331.

The spelling of 248808991 in words is "two hundred forty-eight million, eight hundred eight thousand, nine hundred ninety-one".