459531647 has 4 divisors (see below), whose sum is σ = 460088136. Its totient is φ = 458975160.

The previous prime is 459531629. The next prime is 459531659. The reversal of 459531647 is 746135954.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-459531647 is a prime.

It is a super-2 number, since 2×459531647² = 422338669189065218, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 459531598 and 459531607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (459531617) 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, 277004 + ... + 278657.

It is an arithmetic number, because the mean of its divisors is an integer number (115022034).

Almost surely, 2^459531647 is an apocalyptic number.

459531647 is a deficient number, since it is larger than the sum of its proper divisors (556489).

459531647 is an equidigital number, since it uses as much as digits as its factorization.

459531647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556488.

The product of its digits is 453600, while the sum is 44.

The square root of 459531647 is about 21436.6892732996. The cubic root of 459531647 is about 771.6821867163.

The spelling of 459531647 in words is "four hundred fifty-nine million, five hundred thirty-one thousand, six hundred forty-seven".