1098923 has 12 divisors (see below), whose sum is σ = 1311912. Its totient is φ = 917280.

The previous prime is 1098847. The next prime is 1098953. The reversal of 1098923 is 3298901.

It is not a de Polignac number, because 1098923 - 2⁸ = 1098667 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1098923.

It is not an unprimeable number, because it can be changed into a prime (1098953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1736 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (109326).

2^1098923 is an apocalyptic number.

1098923 is a deficient number, since it is larger than the sum of its proper divisors (212989).

1098923 is an equidigital number, since it uses as much as digits as its factorization.

1098923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1098923 is about 1048.2952828283. The cubic root of 1098923 is about 103.1943106753.

The spelling of 1098923 in words is "one million, ninety-eight thousand, nine hundred twenty-three".