2197839 has 8 divisors (see below), whose sum is σ = 3349120. Its totient is φ = 1255896.

The previous prime is 2197799. The next prime is 2197847. The reversal of 2197839 is 9387912.

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

It is not a de Polignac number, because 2197839 - 2¹³ = 2189647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2197797 and 2197806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197849) 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, 52309 + ... + 52350.

It is an arithmetic number, because the mean of its divisors is an integer number (418640).

2^2197839 is an apocalyptic number.

2197839 is a deficient number, since it is larger than the sum of its proper divisors (1151281).

2197839 is a wasteful number, since it uses less digits than its factorization.

2197839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104669.

The product of its digits is 27216, while the sum is 39.

The square root of 2197839 is about 1482.5110454900. The cubic root of 2197839 is about 130.0165462174.

The spelling of 2197839 in words is "two million, one hundred ninety-seven thousand, eight hundred thirty-nine".