6463139 has 2 divisors, whose sum is σ = 6463140. Its totient is φ = 6463138.

The previous prime is 6463129. The next prime is 6463151. The reversal of 6463139 is 9313646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6463139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6463109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231569 + 3231570.

It is an arithmetic number, because the mean of its divisors is an integer number (3231570).

Almost surely, 2^6463139 is an apocalyptic number.

6463139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463139 is an equidigital number, since it uses as much as digits as its factorization.

6463139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 6463139 is about 2542.2704419475. The cubic root of 6463139 is about 186.2721091421.

The spelling of 6463139 in words is "six million, four hundred sixty-three thousand, one hundred thirty-nine".