1090869 has 16 divisors (see below), whose sum is σ = 1589952. Its totient is φ = 661248.

The previous prime is 1090849. The next prime is 1090877. The reversal of 1090869 is 9680901.

It is a happy number.

It is not a de Polignac number, because 1090869 - 2⁸ = 1090613 is a prime.

It is a super-2 number, since 2×1090869² = 2379990350322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3069 + ... + 3405.

It is an arithmetic number, because the mean of its divisors is an integer number (99372).

2^1090869 is an apocalyptic number.

It is an amenable number.

1090869 is a deficient number, since it is larger than the sum of its proper divisors (499083).

1090869 is a wasteful number, since it uses less digits than its factorization.

1090869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1090869 is about 1044.4467434963. The cubic root of 1090869 is about 102.9415887747.

The spelling of 1090869 in words is "one million, ninety thousand, eight hundred sixty-nine".