428452809 has 8 divisors (see below), whose sum is σ = 596108352. Its totient is φ = 273216240.

The previous prime is 428452777. The next prime is 428452823. The reversal of 428452809 is 908254824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428452809 - 2⁵ = 428452777 is a prime.

It is a super-3 number, since 3×428452809³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (428452909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3104662 + ... + 3104799.

It is an arithmetic number, because the mean of its divisors is an integer number (74513544).

Almost surely, 2^428452809 is an apocalyptic number.

It is an amenable number.

428452809 is a deficient number, since it is larger than the sum of its proper divisors (167655543).

428452809 is a wasteful number, since it uses less digits than its factorization.

428452809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6209487.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 428452809 is about 20699.1016471730. The cubic root of 428452809 is about 753.8778757711.

It can be divided in two parts, 42845 and 2809, that added together give a palindrome (45654).

The spelling of 428452809 in words is "four hundred twenty-eight million, four hundred fifty-two thousand, eight hundred nine".