40866321 has 8 divisors (see below), whose sum is σ = 57356320. Its totient is φ = 25810272.

The previous prime is 40866313. The next prime is 40866323. The reversal of 40866321 is 12366804.

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

It is not a de Polignac number, because 40866321 - 2³ = 40866313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40866323) 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, 358420 + ... + 358533.

It is an arithmetic number, because the mean of its divisors is an integer number (7169540).

Almost surely, 2^40866321 is an apocalyptic number.

It is an amenable number.

40866321 is a deficient number, since it is larger than the sum of its proper divisors (16489999).

40866321 is a wasteful number, since it uses less digits than its factorization.

40866321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716975.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40866321 is about 6392.6771387268. The cubic root of 40866321 is about 344.4465564637.

The spelling of 40866321 in words is "forty million, eight hundred sixty-six thousand, three hundred twenty-one".