6406394 has 16 divisors (see below), whose sum is σ = 9816768. Its totient is φ = 3135072.

The previous prime is 6406381. The next prime is 6406427. The reversal of 6406394 is 4936046.

It is a d-powerful number, because it can be written as 6 + 4⁵ + 0 + 6⁸ + 3 + 9⁶ + 4¹¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 6406394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28109 + ... + 28335.

It is an arithmetic number, because the mean of its divisors is an integer number (613548).

Almost surely, 2^6406394 is an apocalyptic number.

6406394 is a deficient number, since it is larger than the sum of its proper divisors (3410374).

6406394 is a wasteful number, since it uses less digits than its factorization.

6406394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6406394 is about 2531.0855378671. The cubic root of 6406394 is about 185.7253625966.

The spelling of 6406394 in words is "six million, four hundred six thousand, three hundred ninety-four".