4000006406 has 16 divisors (see below), whose sum is σ = 6830051328. Its totient is φ = 1739133000.

The previous prime is 4000006403. The next prime is 4000006411. The reversal of 4000006406 is 6046000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000006403) 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, 3952070 + ... + 3953081.

It is an arithmetic number, because the mean of its divisors is an integer number (426878208).

Almost surely, 2^4000006406 is an apocalyptic number.

4000006406 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

4000006406 is a deficient number, since it is larger than the sum of its proper divisors (2830044922).

4000006406 is a wasteful number, since it uses less digits than its factorization.

4000006406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905187.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4000006406 is about 63245.6038472240. The cubic root of 4000006406 is about 1587.4018993753.

The spelling of 4000006406 in words is "four billion, six thousand, four hundred six".