1090839 has 16 divisors (see below), whose sum is σ = 1566432. Its totient is φ = 672768.

The previous prime is 1090819. The next prime is 1090841. The reversal of 1090839 is 9380901.

It is a happy number.

It is not a de Polignac number, because 1090839 - 2⁵ = 1090807 is a prime.

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, 3577 + ... + 3869.

It is an arithmetic number, because the mean of its divisors is an integer number (97902).

2^1090839 is an apocalyptic number.

1090839 is a deficient number, since it is larger than the sum of its proper divisors (475593).

1090839 is a wasteful number, since it uses less digits than its factorization.

1090839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1090839 is about 1044.4323817270. The cubic root of 1090839 is about 102.9406451001.

The spelling of 1090839 in words is "one million, ninety thousand, eight hundred thirty-nine".