4207439945 has 16 divisors (see below), whose sum is σ = 5095309440. Its totient is φ = 3335157504.

The previous prime is 4207439891. The next prime is 4207439947. The reversal of 4207439945 is 5499347024.

It is a cyclic number.

It is not a de Polignac number, because 4207439945 - 2¹² = 4207435849 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4207439945.

It is not an unprimeable number, because it can be changed into a prime (4207439947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266996 + ... + 282314.

It is an arithmetic number, because the mean of its divisors is an integer number (318456840).

Almost surely, 2^4207439945 is an apocalyptic number.

It is an amenable number.

4207439945 is a deficient number, since it is larger than the sum of its proper divisors (887869495).

4207439945 is a wasteful number, since it uses less digits than its factorization.

4207439945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15824.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 4207439945 is about 64864.7820084212. The cubic root of 4207439945 is about 1614.3807682021.

The spelling of 4207439945 in words is "four billion, two hundred seven million, four hundred thirty-nine thousand, nine hundred forty-five".