63139897 has 2 divisors, whose sum is σ = 63139898. Its totient is φ = 63139896.

The previous prime is 63139891. The next prime is 63139903. The reversal of 63139897 is 79893136.

63139897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (63139891) and next prime (63139903).

It can be written as a sum of positive squares in only one way, i.e., 63107136 + 32761 = 7944^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 63139897 - 2³ = 63139889 is a prime.

It is not a weakly prime, because it can be changed into another prime (63139891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31569948 + 31569949.

It is an arithmetic number, because the mean of its divisors is an integer number (31569949).

Almost surely, 2^63139897 is an apocalyptic number.

It is an amenable number.

63139897 is a deficient number, since it is larger than the sum of its proper divisors (1).

63139897 is an equidigital number, since it uses as much as digits as its factorization.

63139897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 63139897 is about 7946.0617289321. The cubic root of 63139897 is about 398.2000311800.

The spelling of 63139897 in words is "sixty-three million, one hundred thirty-nine thousand, eight hundred ninety-seven".