6409894 has 8 divisors (see below), whose sum is σ = 9636048. Its totient is φ = 3197880.

The previous prime is 6409889. The next prime is 6409913. The reversal of 6409894 is 4989046.

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

It is a congruent number.

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, 2317 + ... + 4264.

It is an arithmetic number, because the mean of its divisors is an integer number (1204506).

Almost surely, 2^6409894 is an apocalyptic number.

6409894 is a deficient number, since it is larger than the sum of its proper divisors (3226154).

6409894 is a wasteful number, since it uses less digits than its factorization.

6409894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6409894 is about 2531.7768464065. The cubic root of 6409894 is about 185.7591788342.

The spelling of 6409894 in words is "six million, four hundred nine thousand, eight hundred ninety-four".