3994633937 has 4 divisors (see below), whose sum is σ = 4565295936. Its totient is φ = 3423971940.

The previous prime is 3994633933. The next prime is 3994633943. The reversal of 3994633937 is 7393364993.

3994633937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3994633937 - 2² = 3994633933 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3994633933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285330989 + ... + 285331002.

It is an arithmetic number, because the mean of its divisors is an integer number (1141323984).

Almost surely, 2^3994633937 is an apocalyptic number.

It is an amenable number.

3994633937 is a deficient number, since it is larger than the sum of its proper divisors (570661999).

3994633937 is an equidigital number, since it uses as much as digits as its factorization.

3994633937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570661998.

The product of its digits is 9920232, while the sum is 56.

The square root of 3994633937 is about 63203.1165133492. The cubic root of 3994633937 is about 1586.6908931395.

The spelling of 3994633937 in words is "three billion, nine hundred ninety-four million, six hundred thirty-three thousand, nine hundred thirty-seven".