428859529 has 4 divisors (see below), whose sum is σ = 490125184. Its totient is φ = 367593876.

The previous prime is 428859491. The next prime is 428859533. The reversal of 428859529 is 925958824.

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 a de Polignac number, because none of the positive numbers 2^k-428859529 is a prime.

It is a super-2 number, since 2×428859529² = 367840991228203682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428859229) 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, 30632817 + ... + 30632830.

It is an arithmetic number, because the mean of its divisors is an integer number (122531296).

Almost surely, 2^428859529 is an apocalyptic number.

It is an amenable number.

428859529 is a deficient number, since it is larger than the sum of its proper divisors (61265655).

428859529 is an equidigital number, since it uses as much as digits as its factorization.

428859529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61265654.

The product of its digits is 2073600, while the sum is 52.

The square root of 428859529 is about 20708.9238976824. The cubic root of 428859529 is about 754.1163464053.

The spelling of 428859529 in words is "four hundred twenty-eight million, eight hundred fifty-nine thousand, five hundred twenty-nine".