1094391 has 20 divisors (see below), whose sum is σ = 1669800. Its totient is φ = 714096.

The previous prime is 1094377. The next prime is 1094407. The reversal of 1094391 is 1934901.

It is not a de Polignac number, because 1094391 - 2⁷ = 1094263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1094321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4665 + ... + 4893.

It is an arithmetic number, because the mean of its divisors is an integer number (83490).

2^1094391 is an apocalyptic number.

1094391 is a deficient number, since it is larger than the sum of its proper divisors (575409).

1094391 is an equidigital number, since it uses as much as digits as its factorization.

1094391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1094391 is about 1046.1314448959. The cubic root of 1094391 is about 103.0522561369.

It can be divided in two parts, 1094 and 391, that added together give a triangular number (1485 = T₅₄).

The spelling of 1094391 in words is "one million, ninety-four thousand, three hundred ninety-one".