40007801 has 2 divisors, whose sum is σ = 40007802. Its totient is φ = 40007800.

The previous prime is 40007729. The next prime is 40007813. The reversal of 40007801 is 10870004.

It is a happy number.

40007801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26020201 + 13987600 = 5101^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 40007801 - 2²² = 35813497 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 (40007881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003900 + 20003901.

It is an arithmetic number, because the mean of its divisors is an integer number (20003901).

Almost surely, 2^40007801 is an apocalyptic number.

It is an amenable number.

40007801 is a deficient number, since it is larger than the sum of its proper divisors (1).

40007801 is an equidigital number, since it uses as much as digits as its factorization.

40007801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 40007801 is about 6325.1720134713. The cubic root of 40007801 is about 342.0174204275.

Adding to 40007801 its reverse (10870004), we get a palindrome (50877805).

The spelling of 40007801 in words is "forty million, seven thousand, eight hundred one".