634447489 has 16 divisors (see below), whose sum is σ = 704640384. Its totient is φ = 567504000.

The previous prime is 634447483. The next prime is 634447493. The reversal of 634447489 is 984744436.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634447489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634447483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76542 + ... + 84424.

It is an arithmetic number, because the mean of its divisors is an integer number (44040024).

Almost surely, 2^634447489 is an apocalyptic number.

It is an amenable number.

634447489 is a deficient number, since it is larger than the sum of its proper divisors (70192895).

634447489 is a wasteful number, since it uses less digits than its factorization.

634447489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088.

The product of its digits is 2322432, while the sum is 49.

The square root of 634447489 is about 25188.2410858718. The cubic root of 634447489 is about 859.2744416711.

The spelling of 634447489 in words is "six hundred thirty-four million, four hundred forty-seven thousand, four hundred eighty-nine".