423709684 has 6 divisors (see below), whose sum is σ = 741491954. Its totient is φ = 211854840.

The previous prime is 423709667. The next prime is 423709711. The reversal of 423709684 is 486907324.

It can be written as a sum of positive squares in only one way, i.e., 400400100 + 23309584 = 20010^2 + 4828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 423709684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52963707 + ... + 52963714.

Almost surely, 2^423709684 is an apocalyptic number.

It is an amenable number.

423709684 is a deficient number, since it is larger than the sum of its proper divisors (317782270).

423709684 is a wasteful number, since it uses less digits than its factorization.

423709684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105927425 (or 105927423 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 423709684 is about 20584.2095791896. The cubic root of 423709684 is about 751.0856478814.

The spelling of 423709684 in words is "four hundred twenty-three million, seven hundred nine thousand, six hundred eighty-four".