63949273 has 2 divisors, whose sum is σ = 63949274. Its totient is φ = 63949272.

The previous prime is 63949243. The next prime is 63949279. The reversal of 63949273 is 37294936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42159049 + 21790224 = 6493^2 + 4668^2 .

It is a cyclic number.

It is not a de Polignac number, because 63949273 - 2²⁵ = 30394841 is a prime.

It is not a weakly prime, because it can be changed into another prime (63949279) 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, 31974636 + 31974637.

It is an arithmetic number, because the mean of its divisors is an integer number (31974637).

Almost surely, 2^63949273 is an apocalyptic number.

It is an amenable number.

63949273 is a deficient number, since it is larger than the sum of its proper divisors (1).

63949273 is an equidigital number, since it uses as much as digits as its factorization.

63949273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 63949273 is about 7996.8289340213. The cubic root of 63949273 is about 399.8942908164.

The spelling of 63949273 in words is "sixty-three million, nine hundred forty-nine thousand, two hundred seventy-three".