654429 has 4 divisors (see below), whose sum is σ = 872576. Its totient is φ = 436284.

The previous prime is 654427. The next prime is 654439. The reversal of 654429 is 924456.

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 not a de Polignac number, because 654429 - 2¹ = 654427 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654396 and 654405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109069 + ... + 109074.

It is an arithmetic number, because the mean of its divisors is an integer number (218144).

2⁶⁵⁴⁴²⁹ is an apocalyptic number.

It is an amenable number.

654429 is a deficient number, since it is larger than the sum of its proper divisors (218147).

654429 is a wasteful number, since it uses less digits than its factorization.

654429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218146.

The product of its digits is 8640, while the sum is 30.

The square root of 654429 is about 808.9678609191. The cubic root of 654429 is about 86.8202126826.

The spelling of 654429 in words is "six hundred fifty-four thousand, four hundred twenty-nine".