6408493 has 8 divisors (see below), whose sum is σ = 7887488. Its totient is φ = 5070384.

The previous prime is 6408487. The next prime is 6408503. The reversal of 6408493 is 3948046.

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

It is a cyclic number.

It is not a de Polignac number, because 6408493 - 2⁵ = 6408461 is a prime.

It is the 2532-nd Hogben number.

6408493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408443) by changing a digit.

It is a nontrivial repunit in base 2531.

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, 35121 + ... + 35302.

It is an arithmetic number, because the mean of its divisors is an integer number (985936).

Almost surely, 2^6408493 is an apocalyptic number.

It is an amenable number.

6408493 is a deficient number, since it is larger than the sum of its proper divisors (1478995).

6408493 is a wasteful number, since it uses less digits than its factorization.

6408493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70443.

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

The square root of 6408493 is about 2531.5001481335. The cubic root of 6408493 is about 185.7456441553.

The spelling of 6408493 in words is "six million, four hundred eight thousand, four hundred ninety-three".