63979389 has 20 divisors (see below), whose sum is σ = 95843616. Its totient is φ = 42532776.

The previous prime is 63979387. The next prime is 63979429. The reversal of 63979389 is 98397936.

It is not a de Polignac number, because 63979389 - 2¹ = 63979387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63979387) 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 19 ways as a sum of consecutive naturals, for example, 34992 + ... + 36774.

Almost surely, 2^63979389 is an apocalyptic number.

It is an amenable number.

63979389 is a deficient number, since it is larger than the sum of its proper divisors (31864227).

63979389 is a wasteful number, since it uses less digits than its factorization.

63979389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238 (or 2229 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 63979389 is about 7998.7117087691. The cubic root of 63979389 is about 399.9570558063.

The spelling of 63979389 in words is "sixty-three million, nine hundred seventy-nine thousand, three hundred eighty-nine".