462639 has 4 divisors (see below), whose sum is σ = 616856. Its totient is φ = 308424.

The previous prime is 462629. The next prime is 462641. The reversal of 462639 is 936264.

462639 is nontrivially palindromic in base 15.

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

It is not a de Polignac number, because 462639 - 2⁵ = 462607 is a prime.

It is a D-number.

It is a Duffinian number.

462639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (462629) 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, 77104 + ... + 77109.

It is an arithmetic number, because the mean of its divisors is an integer number (154214).

2⁴⁶²⁶³⁹ is an apocalyptic number.

462639 is a deficient number, since it is larger than the sum of its proper divisors (154217).

462639 is a wasteful number, since it uses less digits than its factorization.

462639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154216.

The product of its digits is 7776, while the sum is 30.

The square root of 462639 is about 680.1757125920. The cubic root of 462639 is about 77.3417652485.

The spelling of 462639 in words is "four hundred sixty-two thousand, six hundred thirty-nine".