32439989 has 4 divisors (see below), whose sum is σ = 32533824. Its totient is φ = 32346156.

The previous prime is 32439947. The next prime is 32439997. The reversal of 32439989 is 98993423.

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 a de Polignac number, because none of the positive numbers 2^k-32439989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32439929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46397 + ... + 47090.

It is an arithmetic number, because the mean of its divisors is an integer number (8133456).

Almost surely, 2^32439989 is an apocalyptic number.

It is an amenable number.

32439989 is a deficient number, since it is larger than the sum of its proper divisors (93835).

32439989 is an equidigital number, since it uses as much as digits as its factorization.

32439989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93834.

The product of its digits is 419904, while the sum is 47.

The square root of 32439989 is about 5695.6113807036. The cubic root of 32439989 is about 318.9286731708.

The spelling of 32439989 in words is "thirty-two million, four hundred thirty-nine thousand, nine hundred eighty-nine".