428027499 has 12 divisors (see below), whose sum is σ = 624041496. Its totient is φ = 282684192.

The previous prime is 428027489. The next prime is 428027531. The reversal of 428027499 is 994720824.

It is not a de Polignac number, because 428027499 - 2¹³ = 428019307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428027489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221274 + ... + 223199.

It is an arithmetic number, because the mean of its divisors is an integer number (52003458).

Almost surely, 2^428027499 is an apocalyptic number.

428027499 is a deficient number, since it is larger than the sum of its proper divisors (196013997).

428027499 is a wasteful number, since it uses less digits than its factorization.

428027499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444586 (or 444583 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 428027499 is about 20688.8254620701. The cubic root of 428027499 is about 753.6283438550.

The spelling of 428027499 in words is "four hundred twenty-eight million, twenty-seven thousand, four hundred ninety-nine".