1098403 has 4 divisors (see below), whose sum is σ = 1117080. Its totient is φ = 1079728.

The previous prime is 1098401. The next prime is 1098439. The reversal of 1098403 is 3048901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1098403 - 2¹ = 1098401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9250 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (279270).

2^1098403 is an apocalyptic number.

1098403 is a deficient number, since it is larger than the sum of its proper divisors (18677).

1098403 is an equidigital number, since it uses as much as digits as its factorization.

1098403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18676.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1098403 is about 1048.0472317601. The cubic root of 1098403 is about 103.1780312490.

The spelling of 1098403 in words is "one million, ninety-eight thousand, four hundred three".