1005001099 has 2 divisors, whose sum is σ = 1005001100. Its totient is φ = 1005001098.

The previous prime is 1005001091. The next prime is 1005001159. The reversal of 1005001099 is 9901005001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005001099 - 2³ = 1005001091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005001091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502500549 + 502500550.

It is an arithmetic number, because the mean of its divisors is an integer number (502500550).

Almost surely, 2^1005001099 is an apocalyptic number.

1005001099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005001099 is an equidigital number, since it uses as much as digits as its factorization.

1005001099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 25.

The square root of 1005001099 is about 31701.7523017262. The cubic root of 1005001099 is about 1001.6642616965.

The spelling of 1005001099 in words is "one billion, five million, one thousand, ninety-nine".