40807321 has 8 divisors (see below), whose sum is σ = 42811200. Its totient is φ = 38843280.

The previous prime is 40807271. The next prime is 40807331. The reversal of 40807321 is 12370804.

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

It is a cyclic number.

It is not a de Polignac number, because 40807321 - 2¹¹ = 40805273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40807331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7851 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (5351400).

Almost surely, 2^40807321 is an apocalyptic number.

It is an amenable number.

40807321 is a deficient number, since it is larger than the sum of its proper divisors (2003879).

40807321 is a wasteful number, since it uses less digits than its factorization.

40807321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19919.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 40807321 is about 6388.0608168677. The cubic root of 40807321 is about 344.2807138318.

The spelling of 40807321 in words is "forty million, eight hundred seven thousand, three hundred twenty-one".