3944945345 has 16 divisors (see below), whose sum is σ = 5284395072. Its totient is φ = 2802327360.

The previous prime is 3944945341. The next prime is 3944945351. The reversal of 3944945345 is 5435494493.

It is not a de Polignac number, because 3944945345 - 2² = 3944945341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3944945293 and 3944945302.

It is not an unprimeable number, because it can be changed into a prime (3944945341) 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, 831662 + ... + 836391.

It is an arithmetic number, because the mean of its divisors is an integer number (330274692).

Almost surely, 2^3944945345 is an apocalyptic number.

It is an amenable number.

3944945345 is a deficient number, since it is larger than the sum of its proper divisors (1339449727).

3944945345 is a wasteful number, since it uses less digits than its factorization.

3944945345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668112.

The product of its digits is 4665600, while the sum is 50.

The square root of 3944945345 is about 62808.7999009693. The cubic root of 3944945345 is about 1580.0845632516.

The spelling of 3944945345 in words is "three billion, nine hundred forty-four million, nine hundred forty-five thousand, three hundred forty-five".