40636361 has 4 divisors (see below), whose sum is σ = 40678932. Its totient is φ = 40593792.

The previous prime is 40636339. The next prime is 40636363. The reversal of 40636361 is 16363604.

40636361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24314761 + 16321600 = 4931^2 + 4040^2 .

It is a cyclic number.

It is not a de Polignac number, because 40636361 - 2¹⁴ = 40619977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40636363) 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 in 3 ways as a sum of consecutive naturals, for example, 19820 + ... + 21773.

It is an arithmetic number, because the mean of its divisors is an integer number (10169733).

Almost surely, 2^40636361 is an apocalyptic number.

It is an amenable number.

40636361 is a deficient number, since it is larger than the sum of its proper divisors (42571).

40636361 is an equidigital number, since it uses as much as digits as its factorization.

40636361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42570.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 40636361 is about 6374.6655598549. The cubic root of 40636361 is about 343.7992592328.

Adding to 40636361 its reverse (16363604), we get a palindrome (56999965).

The spelling of 40636361 in words is "forty million, six hundred thirty-six thousand, three hundred sixty-one".