424684529 has 4 divisors (see below), whose sum is σ = 427389684. Its totient is φ = 421979376.

The previous prime is 424684511. The next prime is 424684543. The reversal of 424684529 is 925486424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61858225 + 362826304 = 7865^2 + 19048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424684529 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 424684529.

It is not an unprimeable number, because it can be changed into a prime (424684549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352342 + ... + 1352655.

It is an arithmetic number, because the mean of its divisors is an integer number (106847421).

Almost surely, 2^424684529 is an apocalyptic number.

It is an amenable number.

424684529 is a deficient number, since it is larger than the sum of its proper divisors (2705155).

424684529 is a wasteful number, since it uses less digits than its factorization.

424684529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705154.

The product of its digits is 552960, while the sum is 44.

The square root of 424684529 is about 20607.8754120846. The cubic root of 424684529 is about 751.6612238047.

The spelling of 424684529 in words is "four hundred twenty-four million, six hundred eighty-four thousand, five hundred twenty-nine".