1091494 has 4 divisors (see below), whose sum is σ = 1637244. Its totient is φ = 545746.

The previous prime is 1091477. The next prime is 1091509. The reversal of 1091494 is 4941901.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272872 + ... + 272875.

It is an arithmetic number, because the mean of its divisors is an integer number (409311).

2^1091494 is an apocalyptic number.

1091494 is a deficient number, since it is larger than the sum of its proper divisors (545750).

1091494 is an equidigital number, since it uses as much as digits as its factorization.

1091494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545749.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1091494 is about 1044.7459021217. The cubic root of 1091494 is about 102.9612447277.

The spelling of 1091494 in words is "one million, ninety-one thousand, four hundred ninety-four".