63438489 has 6 divisors (see below), whose sum is σ = 91633386. Its totient is φ = 42292320.

The previous prime is 63438469. The next prime is 63438491. The reversal of 63438489 is 98483436.

63438489 is a `hidden beast` number, since 634 + 3 + 8 + 4 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59028489 + 4410000 = 7683^2 + 2100^2 .

It is not a de Polignac number, because 63438489 - 2¹⁷ = 63307417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63438409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3524352 + ... + 3524369.

It is an arithmetic number, because the mean of its divisors is an integer number (15272231).

Almost surely, 2^63438489 is an apocalyptic number.

It is an amenable number.

63438489 is a deficient number, since it is larger than the sum of its proper divisors (28194897).

63438489 is a wasteful number, since it uses less digits than its factorization.

63438489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048727 (or 7048724 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 63438489 is about 7964.8282467358. The cubic root of 63438489 is about 398.8267474776.

The spelling of 63438489 in words is "sixty-three million, four hundred thirty-eight thousand, four hundred eighty-nine".