1005999994 has 16 divisors (see below), whose sum is σ = 1532074176. Its totient is φ = 495325600.

The previous prime is 1005999989. The next prime is 1005999997. The reversal of 1005999994 is 4999995001.

It is not an unprimeable number, because it can be changed into a prime (1005999997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130734 + ... + 138214.

It is an arithmetic number, because the mean of its divisors is an integer number (95754636).

Almost surely, 2^1005999994 is an apocalyptic number.

1005999994 is a deficient number, since it is larger than the sum of its proper divisors (526074182).

1005999994 is an equidigital number, since it uses as much as digits as its factorization.

1005999994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8501.

The product of its (nonzero) digits is 1180980, while the sum is 55.

The square root of 1005999994 is about 31717.5029597224. The cubic root of 1005999994 is about 1001.9960112882.

The spelling of 1005999994 in words is "one billion, five million, nine hundred ninety-nine thousand, nine hundred ninety-four".