248892991 has 4 divisors (see below), whose sum is σ = 249925984. Its totient is φ = 247860000.

The previous prime is 248892967. The next prime is 248893031. The reversal of 248892991 is 199298842.

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 248892991 - 2⁷ = 248892863 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 (248892911) 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, 516135 + ... + 516616.

It is an arithmetic number, because the mean of its divisors is an integer number (62481496).

Almost surely, 2^248892991 is an apocalyptic number.

248892991 is a deficient number, since it is larger than the sum of its proper divisors (1032993).

248892991 is a wasteful number, since it uses less digits than its factorization.

248892991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032992.

The product of its digits is 746496, while the sum is 52.

The square root of 248892991 is about 15776.3427637713. The cubic root of 248892991 is about 629.0293198277.

The spelling of 248892991 in words is "two hundred forty-eight million, eight hundred ninety-two thousand, nine hundred ninety-one".