32440443421 has 8 divisors (see below), whose sum is σ = 34222566080. Its totient is φ = 30665793888.

The previous prime is 32440443419. The next prime is 32440443433. The reversal of 32440443421 is 12434404423.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32440443421 - 2¹ = 32440443419 is a prime.

It is a super-2 number, since 2×32440443421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32440443521) 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 7 ways as a sum of consecutive naturals, for example, 1859361 + ... + 1876726.

It is an arithmetic number, because the mean of its divisors is an integer number (4277820760).

Almost surely, 2^32440443421 is an apocalyptic number.

It is an amenable number.

32440443421 is a deficient number, since it is larger than the sum of its proper divisors (1782122659).

32440443421 is a wasteful number, since it uses less digits than its factorization.

32440443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736563.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 32440443421 its reverse (12434404423), we get a palindrome (44874847844).

The spelling of 32440443421 in words is "thirty-two billion, four hundred forty million, four hundred forty-three thousand, four hundred twenty-one".