4006306 has 4 divisors (see below), whose sum is σ = 6009462. Its totient is φ = 2003152.

The previous prime is 4006273. The next prime is 4006307. The reversal of 4006306 is 6036004.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2277081 + 1729225 = 1509^2 + 1315^2 .

It is not an unprimeable number, because it can be changed into a prime (4006307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001575 + ... + 1001578.

Almost surely, 2^4006306 is an apocalyptic number.

4006306 is a deficient number, since it is larger than the sum of its proper divisors (2003156).

4006306 is a wasteful number, since it uses less digits than its factorization.

4006306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003155.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 4006306 is about 2001.5758791512. The cubic root of 4006306 is about 158.8234793243.

The spelling of 4006306 in words is "four million, six thousand, three hundred six".