4040006 has 4 divisors (see below), whose sum is σ = 6060012. Its totient is φ = 2020002.

The previous prime is 4039991. The next prime is 4040009. The reversal of 4040006 is 6000404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010000 + ... + 1010003.

It is an arithmetic number, because the mean of its divisors is an integer number (1515003).

Almost surely, 2^4040006 is an apocalyptic number.

4040006 is a deficient number, since it is larger than the sum of its proper divisors (2020006).

4040006 is a wasteful number, since it uses less digits than its factorization.

4040006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020005.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4040006 is about 2009.9766167794. The cubic root of 4040006 is about 159.2675636810.

The spelling of 4040006 in words is "four million, forty thousand, six", and thus it is an eban number.