423866609 has 12 divisors (see below), whose sum is σ = 452866176. Its totient is φ = 395969112.

The previous prime is 423866603. The next prime is 423866647. The reversal of 423866609 is 906668324.

It is a de Polignac number, because none of the positive numbers 2^k-423866609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423866609.

It is not an unprimeable number, because it can be changed into a prime (423866603) 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, 37544 + ... + 47510.

It is an arithmetic number, because the mean of its divisors is an integer number (37738848).

Almost surely, 2^423866609 is an apocalyptic number.

It is an amenable number.

423866609 is a deficient number, since it is larger than the sum of its proper divisors (28999567).

423866609 is an equidigital number, since it uses as much as digits as its factorization.

423866609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10076 (or 10033 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 423866609 is about 20588.0210073722. The cubic root of 423866609 is about 751.1783603935.

The spelling of 423866609 in words is "four hundred twenty-three million, eight hundred sixty-six thousand, six hundred nine".