6463979 has 2 divisors, whose sum is σ = 6463980. Its totient is φ = 6463978.

The previous prime is 6463973. The next prime is 6463991. The reversal of 6463979 is 9793646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6463979 - 2¹² = 6459883 is a prime.

It is not a weakly prime, because it can be changed into another prime (6463973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231989 + 3231990.

It is an arithmetic number, because the mean of its divisors is an integer number (3231990).

Almost surely, 2^6463979 is an apocalyptic number.

6463979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463979 is an equidigital number, since it uses as much as digits as its factorization.

6463979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 6463979 is about 2542.4356432366. The cubic root of 6463979 is about 186.2801785850.

The spelling of 6463979 in words is "six million, four hundred sixty-three thousand, nine hundred seventy-nine".