40443401 has 2 divisors, whose sum is σ = 40443402. Its totient is φ = 40443400.

The previous prime is 40443383. The next prime is 40443409. The reversal of 40443401 is 10434404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 18913801 = 4640^2 + 4349^2 .

It is a cyclic number.

It is not a de Polignac number, because 40443401 - 2¹⁰ = 40442377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40443409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20221700 + 20221701.

It is an arithmetic number, because the mean of its divisors is an integer number (20221701).

Almost surely, 2^40443401 is an apocalyptic number.

It is an amenable number.

40443401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40443401 is an equidigital number, since it uses as much as digits as its factorization.

40443401 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 20.

The square root of 40443401 is about 6359.5126385597. The cubic root of 40443401 is about 343.2542236643.

Adding to 40443401 its reverse (10434404), we get a palindrome (50877805).

The spelling of 40443401 in words is "forty million, four hundred forty-three thousand, four hundred one".