4005046 has 4 divisors (see below), whose sum is σ = 6007572. Its totient is φ = 2002522.

The previous prime is 4005019. The next prime is 4005049. The reversal of 4005046 is 6405004.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001260 + ... + 1001263.

It is an arithmetic number, because the mean of its divisors is an integer number (1501893).

Almost surely, 2^4005046 is an apocalyptic number.

4005046 is a deficient number, since it is larger than the sum of its proper divisors (2002526).

4005046 is a wasteful number, since it uses less digits than its factorization.

4005046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002525.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4005046 is about 2001.2611024052. The cubic root of 4005046 is about 158.8068273622.

The spelling of 4005046 in words is "four million, five thousand, forty-six".