428910829 has 4 divisors (see below), whose sum is σ = 434340160. Its totient is φ = 423481500.

The previous prime is 428910791. The next prime is 428910857. The reversal of 428910829 is 928019824.

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 428910829 - 2⁷ = 428910701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428910329) 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, 2714547 + ... + 2714704.

It is an arithmetic number, because the mean of its divisors is an integer number (108585040).

Almost surely, 2^428910829 is an apocalyptic number.

It is an amenable number.

428910829 is a deficient number, since it is larger than the sum of its proper divisors (5429331).

428910829 is an equidigital number, since it uses as much as digits as its factorization.

428910829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429330.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 428910829 is about 20710.1624571127. The cubic root of 428910829 is about 754.1464142352.

The spelling of 428910829 in words is "four hundred twenty-eight million, nine hundred ten thousand, eight hundred twenty-nine".