1098839 has 8 divisors (see below), whose sum is σ = 1299360. Its totient is φ = 909216.

The previous prime is 1098833. The next prime is 1098847. The reversal of 1098839 is 9388901.

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

It is not a de Polignac number, because 1098839 - 2¹⁶ = 1033303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098833) 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, 2504 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (162420).

2^1098839 is an apocalyptic number.

1098839 is a deficient number, since it is larger than the sum of its proper divisors (200521).

1098839 is an equidigital number, since it uses as much as digits as its factorization.

1098839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1098839 is about 1048.2552170154. The cubic root of 1098839 is about 103.1916812697.

The spelling of 1098839 in words is "one million, ninety-eight thousand, eight hundred thirty-nine".