1009994 has 16 divisors (see below), whose sum is σ = 1580040. Its totient is φ = 483840.

The previous prime is 1009993. The next prime is 1009997. The reversal of 1009994 is 4999001.

It can be written as a sum of positive squares in 4 ways, for example, as 390625 + 619369 = 625^2 + 787^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1009994.

It is not an unprimeable number, because it can be changed into a prime (1009991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8882 + ... + 8994.

2^1009994 is an apocalyptic number.

1009994 is a deficient number, since it is larger than the sum of its proper divisors (570046).

1009994 is a wasteful number, since it uses less digits than its factorization.

1009994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1009994 is about 1004.9845769961. The cubic root of 1009994 is about 100.3320296761.

The spelling of 1009994 in words is "one million, nine thousand, nine hundred ninety-four".