63917941 has 2 divisors, whose sum is σ = 63917942. Its totient is φ = 63917940.

The previous prime is 63917923. The next prime is 63917983. The reversal of 63917941 is 14971936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63840100 + 77841 = 7990^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 63917941 - 2⁹ = 63917429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63917894 and 63917903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63917341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31958970 + 31958971.

It is an arithmetic number, because the mean of its divisors is an integer number (31958971).

Almost surely, 2^63917941 is an apocalyptic number.

It is an amenable number.

63917941 is a deficient number, since it is larger than the sum of its proper divisors (1).

63917941 is an equidigital number, since it uses as much as digits as its factorization.

63917941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 63917941 is about 7994.8696674805. The cubic root of 63917941 is about 399.8289706328.

The spelling of 63917941 in words is "sixty-three million, nine hundred seventeen thousand, nine hundred forty-one".