1001994 has 16 divisors (see below), whose sum is σ = 2290368. Its totient is φ = 286272.

The previous prime is 1001989. The next prime is 1002017. The reversal of 1001994 is 4991001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11887 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (143148).

2^1001994 is an apocalyptic number.

1001994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1001994 is an abundant number, since it is smaller than the sum of its proper divisors (1288374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001994 is a wasteful number, since it uses less digits than its factorization.

1001994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23869.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1001994 is about 1000.9965034904. The cubic root of 1001994 is about 100.0664225374.

Adding to 1001994 its reverse (4991001), we get a palindrome (5992995).

The spelling of 1001994 in words is "one million, one thousand, nine hundred ninety-four".