428458487 has 4 divisors (see below), whose sum is σ = 438908736. Its totient is φ = 418008240.

The previous prime is 428458469. The next prime is 428458489. The reversal of 428458487 is 784854824.

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

It is a cyclic number.

It is not a de Polignac number, because 428458487 - 2⁸ = 428458231 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 (428458489) 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, 5225063 + ... + 5225144.

It is an arithmetic number, because the mean of its divisors is an integer number (109727184).

Almost surely, 2^428458487 is an apocalyptic number.

428458487 is a deficient number, since it is larger than the sum of its proper divisors (10450249).

428458487 is a wasteful number, since it uses less digits than its factorization.

428458487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450248.

The product of its digits is 2293760, while the sum is 50.

The square root of 428458487 is about 20699.2388024294. The cubic root of 428458487 is about 753.8812059703.

The spelling of 428458487 in words is "four hundred twenty-eight million, four hundred fifty-eight thousand, four hundred eighty-seven".