428744459 has 8 divisors (see below), whose sum is σ = 503699952. Its totient is φ = 359785440.

The previous prime is 428744431. The next prime is 428744467. The reversal of 428744459 is 954447824.

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

It is a cyclic number.

It is not a de Polignac number, because 428744459 - 2¹² = 428740363 is a prime.

It is a super-2 number, since 2×428744459² = 367643622246405362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428744429) 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, 1498964 + ... + 1499249.

It is an arithmetic number, because the mean of its divisors is an integer number (62962494).

Almost surely, 2^428744459 is an apocalyptic number.

428744459 is a deficient number, since it is larger than the sum of its proper divisors (74955493).

428744459 is a wasteful number, since it uses less digits than its factorization.

428744459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998237.

The product of its digits is 1290240, while the sum is 47.

The square root of 428744459 is about 20706.1454404242. The cubic root of 428744459 is about 754.0488931373.

The spelling of 428744459 in words is "four hundred twenty-eight million, seven hundred forty-four thousand, four hundred fifty-nine".