428390485 has 8 divisors (see below), whose sum is σ = 516118176. Its totient is φ = 341346000.

The previous prime is 428390483. The next prime is 428390489. The reversal of 428390485 is 584093824.

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

It is not a de Polignac number, because 428390485 - 2¹ = 428390483 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 (428390483) 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 7 ways as a sum of consecutive naturals, for example, 169419 + ... + 171928.

It is an arithmetic number, because the mean of its divisors is an integer number (64514772).

Almost surely, 2^428390485 is an apocalyptic number.

It is an amenable number.

428390485 is a deficient number, since it is larger than the sum of its proper divisors (87727691).

428390485 is a wasteful number, since it uses less digits than its factorization.

428390485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341603.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 428390485 is about 20697.5961164576. The cubic root of 428390485 is about 753.8413202375.

The spelling of 428390485 in words is "four hundred twenty-eight million, three hundred ninety thousand, four hundred eighty-five".