40044023 has 2 divisors, whose sum is σ = 40044024. Its totient is φ = 40044022.

The previous prime is 40044019. The next prime is 40044083. The reversal of 40044023 is 32044004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40044023 - 2² = 40044019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40043992 and 40044010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40044013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20022011 + 20022012.

It is an arithmetic number, because the mean of its divisors is an integer number (20022012).

Almost surely, 2^40044023 is an apocalyptic number.

40044023 is a deficient number, since it is larger than the sum of its proper divisors (1).

40044023 is an equidigital number, since it uses as much as digits as its factorization.

40044023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40044023 is about 6328.0346870099. The cubic root of 40044023 is about 342.1206071212.

Adding to 40044023 its reverse (32044004), we get a palindrome (72088027).

The spelling of 40044023 in words is "forty million, forty-four thousand, twenty-three".