459640 has 16 divisors (see below), whose sum is σ = 1034280. Its totient is φ = 183840.

The previous prime is 459631. The next prime is 459647. The reversal of 459640 is 46954.

It is a super-2 number, since 2×459640² = 422537859200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 459599 and 459608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (459647) by changing a digit.

459640 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5706 + ... + 5785.

2⁴⁵⁹⁶⁴⁰ is an apocalyptic number.

459640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

459640 is an abundant number, since it is smaller than the sum of its proper divisors (574640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

459640 is a wasteful number, since it uses less digits than its factorization.

459640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502 (or 11498 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 459640 is about 677.9675508459. The cubic root of 459640 is about 77.1742833616.

Subtracting from 459640 its reverse (46954), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 459640 in words is "four hundred fifty-nine thousand, six hundred forty".