4039145 has 32 divisors (see below), whose sum is σ = 5750784. Its totient is φ = 2692800.

The previous prime is 4039127. The next prime is 4039157. The reversal of 4039145 is 5419304.

It is not a de Polignac number, because 4039145 - 2¹⁰ = 4038121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 39164 + ... + 39266.

It is an arithmetic number, because the mean of its divisors is an integer number (179712).

Almost surely, 2^4039145 is an apocalyptic number.

It is an amenable number.

4039145 is a deficient number, since it is larger than the sum of its proper divisors (1711639).

4039145 is a wasteful number, since it uses less digits than its factorization.

4039145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4039145 is about 2009.7624237705. The cubic root of 4039145 is about 159.2562485893.

The spelling of 4039145 in words is "four million, thirty-nine thousand, one hundred forty-five".