3996642007 has 2 divisors, whose sum is σ = 3996642008. Its totient is φ = 3996642006.

The previous prime is 3996641951. The next prime is 3996642019. The reversal of 3996642007 is 7002466993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3996642007 - 2⁷ = 3996641879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996642037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998321003 + 1998321004.

It is an arithmetic number, because the mean of its divisors is an integer number (1998321004).

Almost surely, 2^3996642007 is an apocalyptic number.

3996642007 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996642007 is an equidigital number, since it uses as much as digits as its factorization.

3996642007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 3996642007 is about 63219.0003638147. Note that the first 3 decimals coincide. The cubic root of 3996642007 is about 1586.9567208049.

Subtracting from 3996642007 its sum of digits (46), we obtain a square (3996641961 = 63219²).

The spelling of 3996642007 in words is "three billion, nine hundred ninety-six million, six hundred forty-two thousand, seven".