3990044651 has 2 divisors, whose sum is σ = 3990044652. Its totient is φ = 3990044650.

The previous prime is 3990044647. The next prime is 3990044677. The reversal of 3990044651 is 1564400993.

It is a weak prime.

It is an emirp because it is prime and its reverse (1564400993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3990044651 - 2² = 3990044647 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3990044599 and 3990044608.

It is not a weakly prime, because it can be changed into another prime (3990044621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1995022325 + 1995022326.

It is an arithmetic number, because the mean of its divisors is an integer number (1995022326).

Almost surely, 2^3990044651 is an apocalyptic number.

3990044651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3990044651 is an equidigital number, since it uses as much as digits as its factorization.

3990044651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 3990044651 is about 63166.8002276512. The cubic root of 3990044651 is about 1586.0830302926.

The spelling of 3990044651 in words is "three billion, nine hundred ninety million, forty-four thousand, six hundred fifty-one".