632729009 has 4 divisors (see below), whose sum is σ = 690249840. Its totient is φ = 575208180.

The previous prime is 632728979. The next prime is 632729023. The reversal of 632729009 is 900927236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 632729009 - 2⁸ = 632728753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632729029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28760399 + ... + 28760420.

It is an arithmetic number, because the mean of its divisors is an integer number (172562460).

Almost surely, 2^632729009 is an apocalyptic number.

It is an amenable number.

632729009 is a deficient number, since it is larger than the sum of its proper divisors (57520831).

632729009 is a wasteful number, since it uses less digits than its factorization.

632729009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57520830.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 632729009 is about 25154.1052116747. The cubic root of 632729009 is about 858.4979228867.

The spelling of 632729009 in words is "six hundred thirty-two million, seven hundred twenty-nine thousand, nine".