7990305461 has 2 divisors, whose sum is σ = 7990305462. Its totient is φ = 7990305460.

The previous prime is 7990305419. The next prime is 7990305523. The reversal of 7990305461 is 1645030997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7915482961 + 74822500 = 88969^2 + 8650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7990305461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7990305361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995152730 + 3995152731.

It is an arithmetic number, because the mean of its divisors is an integer number (3995152731).

Almost surely, 2^7990305461 is an apocalyptic number.

It is an amenable number.

7990305461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7990305461 is an equidigital number, since it uses as much as digits as its factorization.

7990305461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 7990305461 is about 89388.5085511555. The cubic root of 7990305461 is about 1999.1917951965.

The spelling of 7990305461 in words is "seven billion, nine hundred ninety million, three hundred five thousand, four hundred sixty-one".