248642099 has 2 divisors, whose sum is σ = 248642100. Its totient is φ = 248642098.

The previous prime is 248642033. The next prime is 248642123. The reversal of 248642099 is 990246842.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 248642099 - 2⁸ = 248641843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (248642699) 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, 124321049 + 124321050.

It is an arithmetic number, because the mean of its divisors is an integer number (124321050).

Almost surely, 2^248642099 is an apocalyptic number.

248642099 is a deficient number, since it is larger than the sum of its proper divisors (1).

248642099 is an equidigital number, since it uses as much as digits as its factorization.

248642099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 248642099 is about 15768.3892328925. The cubic root of 248642099 is about 628.8178882912.

The spelling of 248642099 in words is "two hundred forty-eight million, six hundred forty-two thousand, ninety-nine".