2198139 has 4 divisors (see below), whose sum is σ = 2930856. Its totient is φ = 1465424.

The previous prime is 2198137. The next prime is 2198153. The reversal of 2198139 is 9318912.

2198139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2198139 - 2¹ = 2198137 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2198137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366354 + ... + 366359.

It is an arithmetic number, because the mean of its divisors is an integer number (732714).

2^2198139 is an apocalyptic number.

2198139 is a deficient number, since it is larger than the sum of its proper divisors (732717).

2198139 is an equidigital number, since it uses as much as digits as its factorization.

2198139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732716.

The product of its digits is 3888, while the sum is 33.

The square root of 2198139 is about 1482.6122217222. The cubic root of 2198139 is about 130.0224616021.

The spelling of 2198139 in words is "two million, one hundred ninety-eight thousand, one hundred thirty-nine".