2148439 has 4 divisors (see below), whose sum is σ = 2152656. Its totient is φ = 2144224.

The previous prime is 2148437. The next prime is 2148449. The reversal of 2148439 is 9348412.

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 2148439 - 2¹ = 2148437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2148439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148437) 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, 1219 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (538164).

2^2148439 is an apocalyptic number.

2148439 is a deficient number, since it is larger than the sum of its proper divisors (4217).

2148439 is an equidigital number, since it uses as much as digits as its factorization.

2148439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216.

The product of its digits is 6912, while the sum is 31.

The square root of 2148439 is about 1465.7554366265. The cubic root of 2148439 is about 129.0350444620.

The spelling of 2148439 in words is "two million, one hundred forty-eight thousand, four hundred thirty-nine".