1090939 has 2 divisors, whose sum is σ = 1090940. Its totient is φ = 1090938.

The previous prime is 1090937. The next prime is 1090949. The reversal of 1090939 is 9390901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1090939 - 2¹ = 1090937 is a prime.

Together with 1090937, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1090939.

It is not a weakly prime, because it can be changed into another prime (1090937) 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 as a sum of consecutive naturals, namely, 545469 + 545470.

It is an arithmetic number, because the mean of its divisors is an integer number (545470).

2^1090939 is an apocalyptic number.

1090939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090939 is an equidigital number, since it uses as much as digits as its factorization.

1090939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1090939 is about 1044.4802535233. The cubic root of 1090939 is about 102.9437906147.

The spelling of 1090939 in words is "one million, ninety thousand, nine hundred thirty-nine".