40184321 has 2 divisors, whose sum is σ = 40184322. Its totient is φ = 40184320.

The previous prime is 40184293. The next prime is 40184323. The reversal of 40184321 is 12348104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 16516096 = 4865^2 + 4064^2 .

It is a cyclic number.

It is not a de Polignac number, because 40184321 - 2¹⁴ = 40167937 is a prime.

It is a super-2 number, since 2×40184321² = 3229559308462082, which contains 22 as substring.

Together with 40184323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40184323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20092160 + 20092161.

It is an arithmetic number, because the mean of its divisors is an integer number (20092161).

Almost surely, 2^40184321 is an apocalyptic number.

It is an amenable number.

40184321 is a deficient number, since it is larger than the sum of its proper divisors (1).

40184321 is an equidigital number, since it uses as much as digits as its factorization.

40184321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40184321 is about 6339.1104265504. The cubic root of 40184321 is about 342.5196919788.

The spelling of 40184321 in words is "forty million, one hundred eighty-four thousand, three hundred twenty-one".