40064321 has 8 divisors (see below), whose sum is σ = 45607104. Its totient is φ = 34838320.

The previous prime is 40064279. The next prime is 40064327. The reversal of 40064321 is 12346004.

It is a happy number.

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

It is not a de Polignac number, because 40064321 - 2¹⁸ = 39802177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40064293 and 40064302.

It is not an unprimeable number, because it can be changed into a prime (40064327) 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 7 ways as a sum of consecutive naturals, for example, 78926 + ... + 79431.

It is an arithmetic number, because the mean of its divisors is an integer number (5700888).

Almost surely, 2^40064321 is an apocalyptic number.

It is an amenable number.

40064321 is a deficient number, since it is larger than the sum of its proper divisors (5542783).

40064321 is a wasteful number, since it uses less digits than its factorization.

40064321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158391.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40064321 is about 6329.6382993027. The cubic root of 40064321 is about 342.1784034376.

The spelling of 40064321 in words is "forty million, sixty-four thousand, three hundred twenty-one".