4009138 has 8 divisors (see below), whose sum is σ = 6872832. Its totient is φ = 1718196.

The previous prime is 4009097. The next prime is 4009139. The reversal of 4009138 is 8319004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4009139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143170 + ... + 143197.

It is an arithmetic number, because the mean of its divisors is an integer number (859104).

Almost surely, 2^4009138 is an apocalyptic number.

4009138 is a deficient number, since it is larger than the sum of its proper divisors (2863694).

4009138 is a wasteful number, since it uses less digits than its factorization.

4009138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286376.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4009138 is about 2002.2831967531. The cubic root of 4009138 is about 158.8608938530.

The spelling of 4009138 in words is "four million, nine thousand, one hundred thirty-eight".