4040032321 has 4 divisors (see below), whose sum is σ = 4350804052. Its totient is φ = 3729260592.

The previous prime is 4040032307. The next prime is 4040032333. The reversal of 4040032321 is 1232300404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 997296400 + 3042735921 = 31580^2 + 55161^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040032321 - 2⁷ = 4040032193 is a prime.

It is a super-2 number, since 2×4040032321² = 32643722309449294082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040032391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155385846 + ... + 155385871.

It is an arithmetic number, because the mean of its divisors is an integer number (1087701013).

Almost surely, 2^4040032321 is an apocalyptic number.

It is an amenable number.

4040032321 is a deficient number, since it is larger than the sum of its proper divisors (310771731).

4040032321 is a wasteful number, since it uses less digits than its factorization.

4040032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310771730.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 4040032321 is about 63561.2485796181. The cubic root of 4040032321 is about 1592.6790956109.

Adding to 4040032321 its reverse (1232300404), we get a palindrome (5272332725).

The spelling of 4040032321 in words is "four billion, forty million, thirty-two thousand, three hundred twenty-one".