40336081 has 2 divisors, whose sum is σ = 40336082. Its totient is φ = 40336080.

The previous prime is 40336027. The next prime is 40336099. The reversal of 40336081 is 18063304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25250625 + 15085456 = 5025^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 40336081 - 2⁹ = 40335569 is a prime.

It is a super-2 number, since 2×40336081² = 3253998860877122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40336001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20168040 + 20168041.

It is an arithmetic number, because the mean of its divisors is an integer number (20168041).

Almost surely, 2^40336081 is an apocalyptic number.

It is an amenable number.

40336081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40336081 is an equidigital number, since it uses as much as digits as its factorization.

40336081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40336081 is about 6351.0692800504. The cubic root of 40336081 is about 342.9503366289.

Adding to 40336081 its reverse (18063304), we get a palindrome (58399385).

The spelling of 40336081 in words is "forty million, three hundred thirty-six thousand, eighty-one".