63529979 has 4 divisors (see below), whose sum is σ = 66292176. Its totient is φ = 60767784.

The previous prime is 63529967. The next prime is 63529993. The reversal of 63529979 is 97992536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63529979 - 2⁸ = 63529723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63529379) 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 in 3 ways as a sum of consecutive naturals, for example, 1381064 + ... + 1381109.

It is an arithmetic number, because the mean of its divisors is an integer number (16573044).

Almost surely, 2^63529979 is an apocalyptic number.

63529979 is a deficient number, since it is larger than the sum of its proper divisors (2762197).

63529979 is a wasteful number, since it uses less digits than its factorization.

63529979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762196.

The product of its digits is 918540, while the sum is 50.

The square root of 63529979 is about 7970.5695530495. The cubic root of 63529979 is about 399.0183826222.

The spelling of 63529979 in words is "sixty-three million, five hundred twenty-nine thousand, nine hundred seventy-nine".