4045007 has 4 divisors (see below), whose sum is σ = 4184520. Its totient is φ = 3905496.

The previous prime is 4044983. The next prime is 4045009. The reversal of 4045007 is 7005404.

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

It is a cyclic number.

It is not a de Polignac number, because 4045007 - 2⁸ = 4044751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4045007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045009) 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, 69713 + ... + 69770.

It is an arithmetic number, because the mean of its divisors is an integer number (1046130).

Almost surely, 2^4045007 is an apocalyptic number.

4045007 is a deficient number, since it is larger than the sum of its proper divisors (139513).

4045007 is a wasteful number, since it uses less digits than its factorization.

4045007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139512.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 4045007 is about 2011.2202763497. The cubic root of 4045007 is about 159.3332540669. Note that the first 3 decimals are identical.

The spelling of 4045007 in words is "four million, forty-five thousand, seven".