2439789 has 16 divisors (see below), whose sum is σ = 3758400. Its totient is φ = 1391360.

The previous prime is 2439781. The next prime is 2439791. The reversal of 2439789 is 9879342.

It is a cyclic number.

It is not a de Polignac number, because 2439789 - 2³ = 2439781 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2439789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1614 + ... + 2735.

It is an arithmetic number, because the mean of its divisors is an integer number (234900).

2^2439789 is an apocalyptic number.

It is an amenable number.

2439789 is a deficient number, since it is larger than the sum of its proper divisors (1318611).

2439789 is a wasteful number, since it uses less digits than its factorization.

2439789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its digits is 108864, while the sum is 42.

The square root of 2439789 is about 1561.9823942670. The cubic root of 2439789 is about 134.6224292117.

The spelling of 2439789 in words is "two million, four hundred thirty-nine thousand, seven hundred eighty-nine".