6400488406 has 16 divisors (see below), whose sum is σ = 10947442464. Its totient is φ = 2780302464.

The previous prime is 6400488403. The next prime is 6400488407. The reversal of 6400488406 is 6048840046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400488403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7239930 + ... + 7240813.

It is an arithmetic number, because the mean of its divisors is an integer number (684215154).

Almost surely, 2^6400488406 is an apocalyptic number.

6400488406 is a deficient number, since it is larger than the sum of its proper divisors (4546954058).

6400488406 is a wasteful number, since it uses less digits than its factorization.

6400488406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480775.

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 6400488406 is about 80003.0524792648. The cubic root of 6400488406 is about 1856.6827609903.

The spelling of 6400488406 in words is "six billion, four hundred million, four hundred eighty-eight thousand, four hundred six".