1109457 has 10 divisors (see below), whose sum is σ = 1657458. Its totient is φ = 739584.

The previous prime is 1109431. The next prime is 1109473. The reversal of 1109457 is 7549011.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 467856 = 801^2 + 684^2 .

It is not a de Polignac number, because 1109457 - 2⁶ = 1109393 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1109457.

It is not an unprimeable number, because it can be changed into a prime (1109477) 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 9 ways as a sum of consecutive naturals, for example, 6768 + ... + 6929.

2^1109457 is an apocalyptic number.

It is an amenable number.

1109457 is a deficient number, since it is larger than the sum of its proper divisors (548001).

1109457 is an equidigital number, since it uses as much as digits as its factorization.

1109457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13709 (or 13700 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1109457 is about 1053.3076473661. The cubic root of 1109457 is about 103.5229942609.

The spelling of 1109457 in words is "one million, one hundred nine thousand, four hundred fifty-seven".