83632009 has 4 divisors (see below), whose sum is σ = 83652480. Its totient is φ = 83611540.

The previous prime is 83632001. The next prime is 83632049. The reversal of 83632009 is 90023638.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90023638 = 2 ⋅45011819.

It is a cyclic number.

It is not a de Polignac number, because 83632009 - 2³ = 83632001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83632001) 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, 1777 + ... + 13054.

It is an arithmetic number, because the mean of its divisors is an integer number (20913120).

Almost surely, 2^83632009 is an apocalyptic number.

It is an amenable number.

83632009 is a deficient number, since it is larger than the sum of its proper divisors (20471).

83632009 is a wasteful number, since it uses less digits than its factorization.

83632009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 83632009 is about 9145.0537997324. The cubic root of 83632009 is about 437.3114446249.

The spelling of 83632009 in words is "eighty-three million, six hundred thirty-two thousand, nine".