63989101 has 4 divisors (see below), whose sum is σ = 69806304. Its totient is φ = 58171900.

The previous prime is 63989089. The next prime is 63989129. The reversal of 63989101 is 10198936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63989101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63989141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2908585 + ... + 2908606.

It is an arithmetic number, because the mean of its divisors is an integer number (17451576).

Almost surely, 2^63989101 is an apocalyptic number.

It is an amenable number.

63989101 is a deficient number, since it is larger than the sum of its proper divisors (5817203).

63989101 is a wasteful number, since it uses less digits than its factorization.

63989101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5817202.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 63989101 is about 7999.3187834965. The cubic root of 63989101 is about 399.9772924609.

The spelling of 63989101 in words is "sixty-three million, nine hundred eighty-nine thousand, one hundred one".