3990639053 has 2 divisors, whose sum is σ = 3990639054. Its totient is φ = 3990639052.

The previous prime is 3990639013. The next prime is 3990639131. The reversal of 3990639053 is 3509360993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3071154724 + 919484329 = 55418^2 + 30323^2 .

It is an emirp because it is prime and its reverse (3509360993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3990639053 - 2⁸ = 3990638797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3990638989 and 3990639007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3990639013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1995319526 + 1995319527.

It is an arithmetic number, because the mean of its divisors is an integer number (1995319527).

Almost surely, 2^3990639053 is an apocalyptic number.

It is an amenable number.

3990639053 is a deficient number, since it is larger than the sum of its proper divisors (1).

3990639053 is an equidigital number, since it uses as much as digits as its factorization.

3990639053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 590490, while the sum is 47.

The square root of 3990639053 is about 63171.5050715115. The cubic root of 3990639053 is about 1586.1617866472.

The spelling of 3990639053 in words is "three billion, nine hundred ninety million, six hundred thirty-nine thousand, fifty-three".