1090803 has 16 divisors (see below), whose sum is σ = 1679360. Its totient is φ = 616896.

The previous prime is 1090799. The next prime is 1090807. The reversal of 1090803 is 3080901.

It is an interprime number because it is at equal distance from previous prime (1090799) and next prime (1090807).

It is not a de Polignac number, because 1090803 - 2² = 1090799 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

1090803 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1090803.

It is not an unprimeable number, because it can be changed into a prime (1090807) 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, 2463 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (104960).

2^1090803 is an apocalyptic number.

1090803 is a deficient number, since it is larger than the sum of its proper divisors (588557).

1090803 is a wasteful number, since it uses less digits than its factorization.

1090803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1090803 is about 1044.4151473432. The cubic root of 1090803 is about 102.9395126678.

The spelling of 1090803 in words is "one million, ninety thousand, eight hundred three".