63949 has 2 divisors, whose sum is σ = 63950. Its totient is φ = 63948.

The previous prime is 63929. The next prime is 63977. The reversal of 63949 is 94936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59049 + 4900 = 243^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 63949 - 2¹⁵ = 31181 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31974 + 31975.

It is an arithmetic number, because the mean of its divisors is an integer number (31975).

2⁶³⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

63949 is a deficient number, since it is larger than the sum of its proper divisors (1).

63949 is an equidigital number, since it uses as much as digits as its factorization.

63949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The square root of 63949 is about 252.8813951243. The cubic root of 63949 is about 39.9893721765.

The spelling of 63949 in words is "sixty-three thousand, nine hundred forty-nine".