634429 has 4 divisors (see below), whose sum is σ = 667840. Its totient is φ = 601020.

The previous prime is 634421. The next prime is 634441. The reversal of 634429 is 924436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634429 - 2³ = 634421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634397 and 634406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634421) 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, 16677 + ... + 16714.

It is an arithmetic number, because the mean of its divisors is an integer number (166960).

2⁶³⁴⁴²⁹ is an apocalyptic number.

It is an amenable number.

634429 is a deficient number, since it is larger than the sum of its proper divisors (33411).

634429 is a wasteful number, since it uses less digits than its factorization.

634429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33410.

The product of its digits is 5184, while the sum is 28.

The square root of 634429 is about 796.5105146826. The cubic root of 634429 is about 85.9266094629.

The spelling of 634429 in words is "six hundred thirty-four thousand, four hundred twenty-nine".