1091407 has 4 divisors (see below), whose sum is σ = 1103760. Its totient is φ = 1079056.

The previous prime is 1091401. The next prime is 1091411. The reversal of 1091407 is 7041901.

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

It is a cyclic number.

It is not a de Polignac number, because 1091407 - 2³ = 1091399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091401) 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 3 ways as a sum of consecutive naturals, for example, 6043 + ... + 6220.

It is an arithmetic number, because the mean of its divisors is an integer number (275940).

2^1091407 is an apocalyptic number.

1091407 is a deficient number, since it is larger than the sum of its proper divisors (12353).

1091407 is an equidigital number, since it uses as much as digits as its factorization.

1091407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12352.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1091407 is about 1044.7042643734. The cubic root of 1091407 is about 102.9585090687.

The spelling of 1091407 in words is "one million, ninety-one thousand, four hundred seven".