3933363721 has 12 divisors (see below), whose sum is σ = 4601117520. Its totient is φ = 3352612200.

The previous prime is 3933363689. The next prime is 3933363727. The reversal of 3933363721 is 1273633393.

3933363721 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 3933363721 - 2⁵ = 3933363689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3933363727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215455 + ... + 232996.

It is an arithmetic number, because the mean of its divisors is an integer number (383426460).

Almost surely, 2^3933363721 is an apocalyptic number.

It is an amenable number.

3933363721 is a deficient number, since it is larger than the sum of its proper divisors (667753799).

3933363721 is a wasteful number, since it uses less digits than its factorization.

3933363721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448644 (or 448637 counting only the distinct ones).

The product of its digits is 183708, while the sum is 40.

The square root of 3933363721 is about 62716.5346698939. The cubic root of 3933363721 is about 1578.5367696936.

The spelling of 3933363721 in words is "three billion, nine hundred thirty-three million, three hundred sixty-three thousand, seven hundred twenty-one".