3955438785 has 16 divisors (see below), whose sum is σ = 6330502656. Its totient is φ = 2108967168.

The previous prime is 3955438757. The next prime is 3955438801. The reversal of 3955438785 is 5878345593.

It is a happy number.

3955438785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3955438785 - 2⁷ = 3955438657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19792 + ... + 91118.

It is an arithmetic number, because the mean of its divisors is an integer number (395656416).

Almost surely, 2^3955438785 is an apocalyptic number.

It is an amenable number.

3955438785 is a deficient number, since it is larger than the sum of its proper divisors (2375063871).

3955438785 is a wasteful number, since it uses less digits than its factorization.

3955438785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75032.

The product of its digits is 18144000, while the sum is 57.

The square root of 3955438785 is about 62892.2792161327. The cubic root of 3955438785 is about 1581.4843158938.

The spelling of 3955438785 in words is "three billion, nine hundred fifty-five million, four hundred thirty-eight thousand, seven hundred eighty-five".