469639 has 4 divisors (see below), whose sum is σ = 477400. Its totient is φ = 461880.

The previous prime is 469631. The next prime is 469649. The reversal of 469639 is 936964.

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

It is a cyclic number.

It is not a de Polignac number, because 469639 - 2³ = 469631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 469598 and 469607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469631) 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, 3789 + ... + 3910.

It is an arithmetic number, because the mean of its divisors is an integer number (119350).

2⁴⁶⁹⁶³⁹ is an apocalyptic number.

469639 is a deficient number, since it is larger than the sum of its proper divisors (7761).

469639 is an equidigital number, since it uses as much as digits as its factorization.

469639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7760.

The product of its digits is 34992, while the sum is 37.

The square root of 469639 is about 685.3021231545. The cubic root of 469639 is about 77.7298897200.

The spelling of 469639 in words is "four hundred sixty-nine thousand, six hundred thirty-nine".