423839560 has 64 divisors (see below), whose sum is σ = 969318000. Its totient is φ = 166772736.

The previous prime is 423839557. The next prime is 423839579. The reversal of 423839560 is 65938324.

It can be written as a sum of positive squares in 8 ways, for example, as 82846404 + 340993156 = 9102^2 + 18466^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214266 + ... + 1214614.

Almost surely, 2^423839560 is an apocalyptic number.

423839560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423839560 is an abundant number, since it is smaller than the sum of its proper divisors (545478440).

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

423839560 is a wasteful number, since it uses less digits than its factorization.

423839560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 423839560 is about 20587.3640857687. The cubic root of 423839560 is about 751.1623812661.

The spelling of 423839560 in words is "four hundred twenty-three million, eight hundred thirty-nine thousand, five hundred sixty".