63489831 has 8 divisors (see below), whose sum is σ = 84716544. Its totient is φ = 42294840.

The previous prime is 63489827. The next prime is 63489847. The reversal of 63489831 is 13898436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63489831 - 2² = 63489827 is a prime.

It is a super-2 number, since 2×63489831² = 8061917280817122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63489871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (10589568).

Almost surely, 2^63489831 is an apocalyptic number.

63489831 is a deficient number, since it is larger than the sum of its proper divisors (21226713).

63489831 is a wasteful number, since it uses less digits than its factorization.

63489831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15861.

The product of its digits is 124416, while the sum is 42.

The square root of 63489831 is about 7968.0506398993. The cubic root of 63489831 is about 398.9343112066.

The spelling of 63489831 in words is "sixty-three million, four hundred eighty-nine thousand, eight hundred thirty-one".