8406039 has 4 divisors (see below), whose sum is σ = 11208056. Its totient is φ = 5604024.

The previous prime is 8406001. The next prime is 8406043. The reversal of 8406039 is 9306048.

8406039 is digitally balanced in base 3, 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 not a de Polignac number, because 8406039 - 2²⁰ = 7357463 is a prime.

It is a super-2 number, since 2×8406039² = 141322983339042, which contains 22 as substring.

It is a Duffinian number.

8406039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8405997 and 8406015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8406049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401004 + ... + 1401009.

It is an arithmetic number, because the mean of its divisors is an integer number (2802014).

Almost surely, 2^8406039 is an apocalyptic number.

8406039 is a deficient number, since it is larger than the sum of its proper divisors (2802017).

8406039 is a wasteful number, since it uses less digits than its factorization.

8406039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802016.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 8406039 is about 2899.3169885337. The cubic root of 8406039 is about 203.3279741190.

Subtracting 8406039 from its reverse (9306048), we obtain a palindrome (900009).

The spelling of 8406039 in words is "eight million, four hundred six thousand, thirty-nine".