429857 has 4 divisors (see below), whose sum is σ = 435120. Its totient is φ = 424596.

The previous prime is 429853. The next prime is 429881. The reversal of 429857 is 758924.

It is a happy number.

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 429857 - 2² = 429853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429851) 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, 2507 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (108780).

2⁴²⁹⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

429857 is a deficient number, since it is larger than the sum of its proper divisors (5263).

429857 is an equidigital number, since it uses as much as digits as its factorization.

429857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262.

The product of its digits is 20160, while the sum is 35.

The square root of 429857 is about 655.6348068857. The cubic root of 429857 is about 75.4700552272.

It can be divided in two parts, 429 and 857, that multiplied together give a triangular number (367653 = T₈₅₇).

The spelling of 429857 in words is "four hundred twenty-nine thousand, eight hundred fifty-seven".