1089903 has 8 divisors (see below), whose sum is σ = 1488816. Its totient is φ = 708800.

The previous prime is 1089877. The next prime is 1089917. The reversal of 1089903 is 3099801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1089903 - 2¹³ = 1081711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4308 + ... + 4553.

It is an arithmetic number, because the mean of its divisors is an integer number (186102).

2^1089903 is an apocalyptic number.

1089903 is a deficient number, since it is larger than the sum of its proper divisors (398913).

1089903 is an equidigital number, since it uses as much as digits as its factorization.

1089903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905.

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

The square root of 1089903 is about 1043.9841952827. The cubic root of 1089903 is about 102.9111937587.

It can be divided in two parts, 108 and 9903, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 1089903 in words is "one million, eighty-nine thousand, nine hundred three".