6386447461 has 2 divisors, whose sum is σ = 6386447462. Its totient is φ = 6386447460.

The previous prime is 6386447429. The next prime is 6386447491. The reversal of 6386447461 is 1647446836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5955054561 + 431392900 = 77169^2 + 20770^2 .

It is a cyclic number.

It is not a de Polignac number, because 6386447461 - 2⁵ = 6386447429 is a prime.

It is a super-2 number, since 2×6386447461² = 81573422344226693042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6386447401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193223730 + 3193223731.

It is an arithmetic number, because the mean of its divisors is an integer number (3193223731).

Almost surely, 2^6386447461 is an apocalyptic number.

It is an amenable number.

6386447461 is a deficient number, since it is larger than the sum of its proper divisors (1).

6386447461 is an equidigital number, since it uses as much as digits as its factorization.

6386447461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 49.

The square root of 6386447461 is about 79915.2517420799. The cubic root of 6386447461 is about 1855.3240799361.

The spelling of 6386447461 in words is "six billion, three hundred eighty-six million, four hundred forty-seven thousand, four hundred sixty-one".