63958943 has 2 divisors, whose sum is σ = 63958944. Its totient is φ = 63958942.

The previous prime is 63958907. The next prime is 63958967. The reversal of 63958943 is 34985936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63958943 - 2¹⁶ = 63893407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63958043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31979471 + 31979472.

It is an arithmetic number, because the mean of its divisors is an integer number (31979472).

Almost surely, 2^63958943 is an apocalyptic number.

63958943 is a deficient number, since it is larger than the sum of its proper divisors (1).

63958943 is an equidigital number, since it uses as much as digits as its factorization.

63958943 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 63958943 is about 7997.4335258256. The cubic root of 63958943 is about 399.9144462860.

The spelling of 63958943 in words is "sixty-three million, nine hundred fifty-eight thousand, nine hundred forty-three".