428790473 has 4 divisors (see below), whose sum is σ = 454013460. Its totient is φ = 403567488.

The previous prime is 428790469. The next prime is 428790487. The reversal of 428790473 is 374097824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149499529 + 279290944 = 12227^2 + 16712^2 .

It is not a de Polignac number, because 428790473 - 2² = 428790469 is a prime.

It is a super-2 number, since 2×428790473² = 367722539471127458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428790463) 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, 12611468 + ... + 12611501.

It is an arithmetic number, because the mean of its divisors is an integer number (113503365).

Almost surely, 2^428790473 is an apocalyptic number.

It is an amenable number.

428790473 is a deficient number, since it is larger than the sum of its proper divisors (25222987).

428790473 is a wasteful number, since it uses less digits than its factorization.

428790473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25222986.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 428790473 is about 20707.2565300186. The cubic root of 428790473 is about 754.0758676858.

The spelling of 428790473 in words is "four hundred twenty-eight million, seven hundred ninety thousand, four hundred seventy-three".