428909964 has 48 divisors (see below), whose sum is σ = 1146958848. Its totient is φ = 122203008.

The previous prime is 428909963. The next prime is 428909969. The reversal of 428909964 is 469909824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428909963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23872 + ... + 37784.

It is an arithmetic number, because the mean of its divisors is an integer number (23894976).

Almost surely, 2^428909964 is an apocalyptic number.

It is an amenable number.

428909964 is an abundant number, since it is smaller than the sum of its proper divisors (718048884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428909964 is a wasteful number, since it uses less digits than its factorization.

428909964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294 (or 14292 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 428909964 is about 20710.1415736349. The cubic root of 428909964 is about 754.1459072634.

The spelling of 428909964 in words is "four hundred twenty-eight million, nine hundred nine thousand, nine hundred sixty-four".