63940141 has 2 divisors, whose sum is σ = 63940142. Its totient is φ = 63940140.

The previous prime is 63940127. The next prime is 63940153. The reversal of 63940141 is 14104936.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55442916 + 8497225 = 7446^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 63940141 - 2⁷ = 63940013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63940841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31970070 + 31970071.

It is an arithmetic number, because the mean of its divisors is an integer number (31970071).

Almost surely, 2^63940141 is an apocalyptic number.

It is an amenable number.

63940141 is a deficient number, since it is larger than the sum of its proper divisors (1).

63940141 is an equidigital number, since it uses as much as digits as its factorization.

63940141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 63940141 is about 7996.2579373104. The cubic root of 63940141 is about 399.8752548507.

The spelling of 63940141 in words is "sixty-three million, nine hundred forty thousand, one hundred forty-one".