459638 has 4 divisors (see below), whose sum is σ = 689460. Its totient is φ = 229818.

The previous prime is 459631. The next prime is 459647. The reversal of 459638 is 836954.

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

It is a super-2 number, since 2×459638² = 422534182088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 459598 and 459607.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 459638.

It is not an unprimeable number, because it can be changed into a prime (459631) by changing a digit.

459638 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 as a sum of consecutive naturals, namely, 114908 + ... + 114911.

It is an arithmetic number, because the mean of its divisors is an integer number (172365).

2⁴⁵⁹⁶³⁸ is an apocalyptic number.

459638 is a deficient number, since it is larger than the sum of its proper divisors (229822).

459638 is a wasteful number, since it uses less digits than its factorization.

459638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229821.

The product of its digits is 25920, while the sum is 35.

The square root of 459638 is about 677.9660758475. The cubic root of 459638 is about 77.1741714270.

The spelling of 459638 in words is "four hundred fifty-nine thousand, six hundred thirty-eight".