2429839 has 4 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 2408224.

The previous prime is 2429831. The next prime is 2429851. The reversal of 2429839 is 9389242.

2429839 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 2429839 - 2³ = 2429831 is a prime.

It is a Duffinian number.

2429839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2429798 and 2429807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2429831) 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, 10639 + ... + 10864.

It is an arithmetic number, because the mean of its divisors is an integer number (612864).

2^2429839 is an apocalyptic number.

2429839 is a deficient number, since it is larger than the sum of its proper divisors (21617).

2429839 is a wasteful number, since it uses less digits than its factorization.

2429839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21616.

The product of its digits is 31104, while the sum is 37.

The square root of 2429839 is about 1558.7940851825. The cubic root of 2429839 is about 134.4391731700.

The spelling of 2429839 in words is "two million, four hundred twenty-nine thousand, eight hundred thirty-nine".