1391094 has 40 divisors (see below), whose sum is σ = 3229248. Its totient is φ = 447120.

The previous prime is 1391087. The next prime is 1391113. The reversal of 1391094 is 4901931.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4884 + ... + 5160.

2^1391094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614624).

1391094 is an abundant number, since it is smaller than the sum of its proper divisors (1838154).

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

1391094 is a wasteful number, since it uses less digits than its factorization.

1391094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 313 counting only the distinct ones).

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

The square root of 1391094 is about 1179.4464803458. The cubic root of 1391094 is about 111.6311740868.

The spelling of 1391094 in words is "one million, three hundred ninety-one thousand, ninety-four".