4097839 has 4 divisors (see below), whose sum is σ = 4104856. Its totient is φ = 4090824.

The previous prime is 4097837. The next prime is 4097843. The reversal of 4097839 is 9387904.

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 4097839 - 2¹ = 4097837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4097837) 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, 2544 + ... + 3829.

It is an arithmetic number, because the mean of its divisors is an integer number (1026214).

Almost surely, 2^4097839 is an apocalyptic number.

4097839 is a deficient number, since it is larger than the sum of its proper divisors (7017).

4097839 is an equidigital number, since it uses as much as digits as its factorization.

4097839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7016.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 4097839 is about 2024.3119818842. The cubic root of 4097839 is about 160.0239417298.

It can be divided in two parts, 40 and 97839, that added together give a palindrome (97879).

The spelling of 4097839 in words is "four million, ninety-seven thousand, eight hundred thirty-nine".