6409900 has 36 divisors (see below), whose sum is σ = 15898288. Its totient is φ = 2197440.

The previous prime is 6409889. The next prime is 6409913. The reversal of 6409900 is 99046.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3879 + ... + 5278.

Almost surely, 2^6409900 is an apocalyptic number.

It is an amenable number.

6409900 is an abundant number, since it is smaller than the sum of its proper divisors (9488388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6409900 is a wasteful number, since it uses less digits than its factorization.

6409900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9178 (or 9171 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 6409900 is about 2531.7780313448. The cubic root of 6409900 is about 185.7592367944.

The spelling of 6409900 in words is "six million, four hundred nine thousand, nine hundred".