2905839 has 6 divisors (see below), whose sum is σ = 4197336. Its totient is φ = 1937220.

The previous prime is 2905823. The next prime is 2905853. The reversal of 2905839 is 9385092.

It is not a de Polignac number, because 2905839 - 2⁴ = 2905823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161427 + ... + 161444.

It is an arithmetic number, because the mean of its divisors is an integer number (699556).

2^2905839 is an apocalyptic number.

2905839 is a deficient number, since it is larger than the sum of its proper divisors (1291497).

2905839 is a wasteful number, since it uses less digits than its factorization.

2905839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322877 (or 322874 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2905839 is about 1704.6521639326. The cubic root of 2905839 is about 142.6999593550.

The spelling of 2905839 in words is "two million, nine hundred five thousand, eight hundred thirty-nine".