63994141 has 2 divisors, whose sum is σ = 63994142. Its totient is φ = 63994140.

The previous prime is 63994129. The next prime is 63994163. The reversal of 63994141 is 14149936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44156025 + 19838116 = 6645^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 63994141 - 2²⁵ = 30439709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63994141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63994121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31997070 + 31997071.

It is an arithmetic number, because the mean of its divisors is an integer number (31997071).

Almost surely, 2^63994141 is an apocalyptic number.

It is an amenable number.

63994141 is a deficient number, since it is larger than the sum of its proper divisors (1).

63994141 is an equidigital number, since it uses as much as digits as its factorization.

63994141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 63994141 is about 7999.6338041188. The cubic root of 63994141 is about 399.9877933775.

The spelling of 63994141 in words is "sixty-three million, nine hundred ninety-four thousand, one hundred forty-one".