6859408 has 20 divisors (see below), whose sum is σ = 13442220. Its totient is φ = 3390464.

The previous prime is 6859387. The next prime is 6859409. The reversal of 6859408 is 8049586.

It can be written as a sum of positive squares in 2 ways, for example, as 944784 + 5914624 = 972^2 + 2432^2 .

It is a super-2 number, since 2×6859408² = 94102956220928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6859409) 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, 985 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (672111).

Almost surely, 2^6859408 is an apocalyptic number.

It is an amenable number.

6859408 is a deficient number, since it is larger than the sum of its proper divisors (6582812).

6859408 is a wasteful number, since it uses less digits than its factorization.

6859408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914 (or 4908 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 6859408 is about 2619.0471549783. The cubic root of 6859408 is about 190.0037672383.

The spelling of 6859408 in words is "six million, eight hundred fifty-nine thousand, four hundred eight".