428245983 has 18 divisors (see below), whose sum is σ = 679925792. Its totient is φ = 259542360.

The previous prime is 428245981. The next prime is 428245991. The reversal of 428245983 is 389542824.

428245983 is a `hidden beast` number, since 42 + 82 + 459 + 83 = 666.

It is not a de Polignac number, because 428245983 - 2¹ = 428245981 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 (428245981) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 195535 + ... + 197712.

Almost surely, 2^428245983 is an apocalyptic number.

428245983 is a deficient number, since it is larger than the sum of its proper divisors (251679809).

428245983 is a wasteful number, since it uses less digits than its factorization.

428245983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393275 (or 393261 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 428245983 is about 20694.1050301771. The cubic root of 428245983 is about 753.7565503585.

The spelling of 428245983 in words is "four hundred twenty-eight million, two hundred forty-five thousand, nine hundred eighty-three".