4029945 has 16 divisors (see below), whose sum is σ = 6728832. Its totient is φ = 2055680.

The previous prime is 4029943. The next prime is 4029959. The reversal of 4029945 is 5499204.

It is not a de Polignac number, because 4029945 - 2¹ = 4029943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4029943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5496 + ... + 6185.

It is an arithmetic number, because the mean of its divisors is an integer number (420552).

Almost surely, 2^4029945 is an apocalyptic number.

It is an amenable number.

4029945 is a deficient number, since it is larger than the sum of its proper divisors (2698887).

4029945 is a wasteful number, since it uses less digits than its factorization.

4029945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 4029945 is about 2007.4722912160. The cubic root of 4029945 is about 159.1352435006.

The spelling of 4029945 in words is "four million, twenty-nine thousand, nine hundred forty-five".