2098139 has 4 divisors (see below), whose sum is σ = 2104224. Its totient is φ = 2092056.

The previous prime is 2098133. The next prime is 2098153. The reversal of 2098139 is 9318902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9318902 = 2 ⋅4659451.

It is a cyclic number.

It is not a de Polignac number, because 2098139 - 2⁸ = 2097883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2098133) 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, 2492 + ... + 3225.

It is an arithmetic number, because the mean of its divisors is an integer number (526056).

2^2098139 is an apocalyptic number.

2098139 is a deficient number, since it is larger than the sum of its proper divisors (6085).

2098139 is an equidigital number, since it uses as much as digits as its factorization.

2098139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084.

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

The square root of 2098139 is about 1448.4954262959. The cubic root of 2098139 is about 128.0200774170.

The spelling of 2098139 in words is "two million, ninety-eight thousand, one hundred thirty-nine".