63140989 has 2 divisors, whose sum is σ = 63140990. Its totient is φ = 63140988.

The previous prime is 63140977. The next prime is 63140993. The reversal of 63140989 is 98904136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58905625 + 4235364 = 7675^2 + 2058^2 .

It is a cyclic number.

It is not a de Polignac number, because 63140989 - 2¹⁷ = 63009917 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 (63140929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31570494 + 31570495.

It is an arithmetic number, because the mean of its divisors is an integer number (31570495).

Almost surely, 2^63140989 is an apocalyptic number.

It is an amenable number.

63140989 is a deficient number, since it is larger than the sum of its proper divisors (1).

63140989 is an equidigital number, since it uses as much as digits as its factorization.

63140989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 63140989 is about 7946.1304419195. The cubic root of 63140989 is about 398.2023267804.

The spelling of 63140989 in words is "sixty-three million, one hundred forty thousand, nine hundred eighty-nine".