32996639 has 4 divisors (see below), whose sum is σ = 35534856. Its totient is φ = 30458424.

The previous prime is 32996633. The next prime is 32996653. The reversal of 32996639 is 93669923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93669923 = 2243 ⋅41761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32996639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32996593 and 32996602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32996633) 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, 1269089 + ... + 1269114.

It is an arithmetic number, because the mean of its divisors is an integer number (8883714).

Almost surely, 2^32996639 is an apocalyptic number.

32996639 is a deficient number, since it is larger than the sum of its proper divisors (2538217).

32996639 is a wasteful number, since it uses less digits than its factorization.

32996639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538216.

The product of its digits is 472392, while the sum is 47.

The square root of 32996639 is about 5744.2701015882. The cubic root of 32996639 is about 320.7425432128.

The spelling of 32996639 in words is "thirty-two million, nine hundred ninety-six thousand, six hundred thirty-nine".