3934938399 has 64 divisors (see below), whose sum is σ = 6604416000. Its totient is φ = 2033095680.

The previous prime is 3934938391. The next prime is 3934938421. The reversal of 3934938399 is 9938394393.

It is a happy number.

It is not a de Polignac number, because 3934938399 - 2³ = 3934938391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3934938391) 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 63 ways as a sum of consecutive naturals, for example, 1027909 + ... + 1031729.

It is an arithmetic number, because the mean of its divisors is an integer number (103194000).

Almost surely, 2^3934938399 is an apocalyptic number.

3934938399 is a deficient number, since it is larger than the sum of its proper divisors (2669477601).

3934938399 is a wasteful number, since it uses less digits than its factorization.

3934938399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968.

The product of its digits is 17006112, while the sum is 60.

The square root of 3934938399 is about 62729.0873439109. The cubic root of 3934938399 is about 1578.7473914132.

The spelling of 3934938399 in words is "three billion, nine hundred thirty-four million, nine hundred thirty-eight thousand, three hundred ninety-nine".