1091994 has 32 divisors (see below), whose sum is σ = 2346624. Its totient is φ = 337920.

The previous prime is 1091983. The next prime is 1092019. The reversal of 1091994 is 4991901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5562 + ... + 5754.

It is an arithmetic number, because the mean of its divisors is an integer number (73332).

2^1091994 is an apocalyptic number.

1091994 is an abundant number, since it is smaller than the sum of its proper divisors (1254630).

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

1091994 is a wasteful number, since it uses less digits than its factorization.

1091994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1091994 is about 1044.9851673588. The cubic root of 1091994 is about 102.9769640884.

The spelling of 1091994 in words is "one million, ninety-one thousand, nine hundred ninety-four".