3953955945 has 16 divisors (see below), whose sum is σ = 6331314240. Its totient is φ = 2107114944.

The previous prime is 3953955923. The next prime is 3953955947. The reversal of 3953955945 is 5495593593.

3953955945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3953955945 - 2⁹ = 3953955433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3953955947) 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, 84055 + ... + 122364.

It is an arithmetic number, because the mean of its divisors is an integer number (395707140).

Almost surely, 2^3953955945 is an apocalyptic number.

It is an amenable number.

3953955945 is a deficient number, since it is larger than the sum of its proper divisors (2377358295).

3953955945 is a wasteful number, since it uses less digits than its factorization.

3953955945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207704.

The product of its digits is 16402500, while the sum is 57.

The square root of 3953955945 is about 62880.4893826376. The cubic root of 3953955945 is about 1581.2866655665.

The spelling of 3953955945 in words is "three billion, nine hundred fifty-three million, nine hundred fifty-five thousand, nine hundred forty-five".