63408009 has 20 divisors (see below), whose sum is σ = 98640016. Its totient is φ = 36229032.

The previous prime is 63407999. The next prime is 63408013. The reversal of 63408009 is 90080436.

It is not a de Polignac number, because 63408009 - 2⁸ = 63407753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63408049) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2802 + ... + 11604.

Almost surely, 2^63408009 is an apocalyptic number.

It is an amenable number.

63408009 is a deficient number, since it is larger than the sum of its proper divisors (35232007).

63408009 is an frugal number, since it uses more digits than its factorization.

63408009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8834 (or 8813 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 63408009 is about 7962.9146045905. The cubic root of 63408009 is about 398.7628630920.

The spelling of 63408009 in words is "sixty-three million, four hundred eight thousand, nine".