63949583 has 2 divisors, whose sum is σ = 63949584. Its totient is φ = 63949582.

The previous prime is 63949577. The next prime is 63949601. The reversal of 63949583 is 38594936.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63949583 - 2¹⁰ = 63948559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63949183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31974791 + 31974792.

It is an arithmetic number, because the mean of its divisors is an integer number (31974792).

Almost surely, 2^63949583 is an apocalyptic number.

63949583 is a deficient number, since it is larger than the sum of its proper divisors (1).

63949583 is an equidigital number, since it uses as much as digits as its factorization.

63949583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 47.

The square root of 63949583 is about 7996.8483166808. The cubic root of 63949583 is about 399.8949369902.

The spelling of 63949583 in words is "sixty-three million, nine hundred forty-nine thousand, five hundred eighty-three".