424812729 has 24 divisors (see below), whose sum is σ = 623742336. Its totient is φ = 256986400.

The previous prime is 424812721. The next prime is 424812733. The reversal of 424812729 is 927218424.

It is a happy number.

It is not a de Polignac number, because 424812729 - 2³ = 424812721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (424812721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384592 + ... + 385694.

It is an arithmetic number, because the mean of its divisors is an integer number (25989264).

Almost surely, 2^424812729 is an apocalyptic number.

It is an amenable number.

424812729 is a deficient number, since it is larger than the sum of its proper divisors (198929607).

424812729 is a wasteful number, since it uses less digits than its factorization.

424812729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2178 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 424812729 is about 20610.9856387316. The cubic root of 424812729 is about 751.7368511371.

The spelling of 424812729 in words is "four hundred twenty-four million, eight hundred twelve thousand, seven hundred twenty-nine".