248092991 has 2 divisors, whose sum is σ = 248092992. Its totient is φ = 248092990.

The previous prime is 248092987. The next prime is 248092993. The reversal of 248092991 is 199290842.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248092991 - 2² = 248092987 is a prime.

Together with 248092993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248092993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124046495 + 124046496.

It is an arithmetic number, because the mean of its divisors is an integer number (124046496).

Almost surely, 2^248092991 is an apocalyptic number.

248092991 is a deficient number, since it is larger than the sum of its proper divisors (1).

248092991 is an equidigital number, since it uses as much as digits as its factorization.

248092991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 248092991 is about 15750.9679385110. The cubic root of 248092991 is about 628.3546475816.

The spelling of 248092991 in words is "two hundred forty-eight million, ninety-two thousand, nine hundred ninety-one".