63979387 has 2 divisors, whose sum is σ = 63979388. Its totient is φ = 63979386.

The previous prime is 63979373. The next prime is 63979429. The reversal of 63979387 is 78397936.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63979387 is a prime.

It is not a weakly prime, because it can be changed into another prime (63979367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31989693 + 31989694.

It is an arithmetic number, because the mean of its divisors is an integer number (31989694).

Almost surely, 2^63979387 is an apocalyptic number.

63979387 is a deficient number, since it is larger than the sum of its proper divisors (1).

63979387 is an equidigital number, since it uses as much as digits as its factorization.

63979387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 63979387 is about 7998.7115837490. The cubic root of 63979387 is about 399.9570516388.

The spelling of 63979387 in words is "sixty-three million, nine hundred seventy-nine thousand, three hundred eighty-seven".