428552999 has 32 divisors (see below), whose sum is σ = 530204160. Its totient is φ = 338256000.

The previous prime is 428552953. The next prime is 428553001. The reversal of 428552999 is 999255824.

It is a cyclic number.

It is not a de Polignac number, because 428552999 - 2¹⁶ = 428487463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428552999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428557999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 819152 + ... + 819674.

It is an arithmetic number, because the mean of its divisors is an integer number (16568880).

Almost surely, 2^428552999 is an apocalyptic number.

428552999 is a deficient number, since it is larger than the sum of its proper divisors (101651161).

428552999 is a wasteful number, since it uses less digits than its factorization.

428552999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711.

The product of its digits is 2332800, while the sum is 53.

The square root of 428552999 is about 20701.5216590472. The cubic root of 428552999 is about 753.9366338078.

It can be divided in two parts, 42855 and 2999, that added together give a palindrome (45854).

The spelling of 428552999 in words is "four hundred twenty-eight million, five hundred fifty-two thousand, nine hundred ninety-nine".