3996641907 has 12 divisors (see below), whose sum is σ = 5777314504. Its totient is φ = 2662403040.

The previous prime is 3996641899. The next prime is 3996641917. The reversal of 3996641907 is 7091466993.

3996641907 is a `hidden beast` number, since 399 + 6 + 64 + 190 + 7 = 666.

It is not a de Polignac number, because 3996641907 - 2³ = 3996641899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3996641917) 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, 156193 + ... + 179970.

Almost surely, 2^3996641907 is an apocalyptic number.

3996641907 is a deficient number, since it is larger than the sum of its proper divisors (1780672597).

3996641907 is a wasteful number, since it uses less digits than its factorization.

3996641907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337490 (or 337487 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 3996641907 is about 63218.9995729132. Note that the first 3 decimals coincide. The cubic root of 3996641907 is about 1586.9567075691.

Adding to 3996641907 its sum of digits (54), we get a square (3996641961 = 63219²).

The spelling of 3996641907 in words is "three billion, nine hundred ninety-six million, six hundred forty-one thousand, nine hundred seven".