7990904063 has 2 divisors, whose sum is σ = 7990904064. Its totient is φ = 7990904062.

The previous prime is 7990904027. The next prime is 7990904083. The reversal of 7990904063 is 3604090997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7990904063 - 2²⁰ = 7989855487 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 7990903999 and 7990904017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7990904003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995452031 + 3995452032.

It is an arithmetic number, because the mean of its divisors is an integer number (3995452032).

Almost surely, 2^7990904063 is an apocalyptic number.

7990904063 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990904063 is an equidigital number, since it uses as much as digits as its factorization.

7990904063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 7990904063 is about 89391.8568047448. The cubic root of 7990904063 is about 1999.2417177904.

The spelling of 7990904063 in words is "seven billion, nine hundred ninety million, nine hundred four thousand, sixty-three".