1001099867 has 2 divisors, whose sum is σ = 1001099868. Its totient is φ = 1001099866.

The previous prime is 1001099843. The next prime is 1001099903. The reversal of 1001099867 is 7689901001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001099867 - 2¹⁴ = 1001083483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001099837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500549933 + 500549934.

It is an arithmetic number, because the mean of its divisors is an integer number (500549934).

Almost surely, 2^1001099867 is an apocalyptic number.

1001099867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001099867 is an equidigital number, since it uses as much as digits as its factorization.

1001099867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 1001099867 is about 31640.1622467395. The cubic root of 1001099867 is about 1000.3664880035.

The spelling of 1001099867 in words is "one billion, one million, ninety-nine thousand, eight hundred sixty-seven".