2123849 has 8 divisors (see below), whose sum is σ = 2614080. Its totient is φ = 1680336.

The previous prime is 2123831. The next prime is 2123851. The reversal of 2123849 is 9483212.

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

It is a de Polignac number, because none of the positive numbers 2^k-2123849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11579 + ... + 11760.

It is an arithmetic number, because the mean of its divisors is an integer number (326760).

2^2123849 is an apocalyptic number.

It is an amenable number.

2123849 is a deficient number, since it is larger than the sum of its proper divisors (490231).

2123849 is a wasteful number, since it uses less digits than its factorization.

2123849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23359.

The product of its digits is 3456, while the sum is 29.

The square root of 2123849 is about 1457.3431304947. The cubic root of 2123849 is about 128.5408632222.

The spelling of 2123849 in words is "two million, one hundred twenty-three thousand, eight hundred forty-nine".