1001243699 has 2 divisors, whose sum is σ = 1001243700. Its totient is φ = 1001243698.

The previous prime is 1001243689. The next prime is 1001243707. The reversal of 1001243699 is 9963421001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001243699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001243609) 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, 500621849 + 500621850.

It is an arithmetic number, because the mean of its divisors is an integer number (500621850).

Almost surely, 2^1001243699 is an apocalyptic number.

1001243699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001243699 is an equidigital number, since it uses as much as digits as its factorization.

1001243699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1001243699 is about 31642.4350990881. The cubic root of 1001243699 is about 1000.4143945867.

It can be divided in two parts, 100124 and 3699, that added together give a cube (103823 = 47³).

The spelling of 1001243699 in words is "one billion, one million, two hundred forty-three thousand, six hundred ninety-nine".