40032401 has 2 divisors, whose sum is σ = 40032402. Its totient is φ = 40032400.

The previous prime is 40032371. The next prime is 40032403. The reversal of 40032401 is 10423004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 3066001 = 6080^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 40032401 - 2⁶ = 40032337 is a prime.

Together with 40032403, 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 (40032403) 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, 20016200 + 20016201.

It is an arithmetic number, because the mean of its divisors is an integer number (20016201).

Almost surely, 2^40032401 is an apocalyptic number.

It is an amenable number.

40032401 is a deficient number, since it is larger than the sum of its proper divisors (1).

40032401 is an equidigital number, since it uses as much as digits as its factorization.

40032401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40032401 is about 6327.1163257838. The cubic root of 40032401 is about 342.0875059646.

Adding to 40032401 its reverse (10423004), we get a palindrome (50455405).

The spelling of 40032401 in words is "forty million, thirty-two thousand, four hundred one".