40442183 has 2 divisors, whose sum is σ = 40442184. Its totient is φ = 40442182.

The previous prime is 40442177. The next prime is 40442191. The reversal of 40442183 is 38124404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40442183 - 2¹⁴ = 40425799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40442123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221091 + 20221092.

It is an arithmetic number, because the mean of its divisors is an integer number (20221092).

Almost surely, 2^40442183 is an apocalyptic number.

40442183 is a deficient number, since it is larger than the sum of its proper divisors (1).

40442183 is an equidigital number, since it uses as much as digits as its factorization.

40442183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40442183 is about 6359.4168757835. The cubic root of 40442183 is about 343.2507777965.

Adding to 40442183 its reverse (38124404), we get a palindrome (78566587).

The spelling of 40442183 in words is "forty million, four hundred forty-two thousand, one hundred eighty-three".