1081469 has 4 divisors (see below), whose sum is σ = 1099260. Its totient is φ = 1063680.

The previous prime is 1081441. The next prime is 1081477. The reversal of 1081469 is 9641801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9641801 = 13 ⋅741677.

It can be written as a sum of positive squares in 2 ways, for example, as 315844 + 765625 = 562^2 + 875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081469 is a prime.

It is a super-2 number, since 2×1081469² = 2339150395922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8804 + ... + 8925.

It is an arithmetic number, because the mean of its divisors is an integer number (274815).

2^1081469 is an apocalyptic number.

It is an amenable number.

1081469 is a deficient number, since it is larger than the sum of its proper divisors (17791).

1081469 is an equidigital number, since it uses as much as digits as its factorization.

1081469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17790.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1081469 is about 1039.9370173236. The cubic root of 1081469 is about 102.6450534046.

The spelling of 1081469 in words is "one million, eighty-one thousand, four hundred sixty-nine".