6408394 has 8 divisors (see below), whose sum is σ = 9626148. Its totient is φ = 3199680.

The previous prime is 6408359. The next prime is 6408407. The reversal of 6408394 is 4938046.

It can be written as a sum of positive squares in 2 ways, for example, as 5004169 + 1404225 = 2237^2 + 1185^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 3580.

Almost surely, 2^6408394 is an apocalyptic number.

6408394 is a deficient number, since it is larger than the sum of its proper divisors (3217754).

6408394 is a wasteful number, since it uses less digits than its factorization.

6408394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6408394 is about 2531.4805944348. The cubic root of 6408394 is about 185.7446876687.

The spelling of 6408394 in words is "six million, four hundred eight thousand, three hundred ninety-four".