40635321 has 16 divisors (see below), whose sum is σ = 57498624. Its totient is φ = 25438464.

The previous prime is 40635317. The next prime is 40635347. The reversal of 40635321 is 12353604.

It is a happy number.

40635321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40635321 - 2² = 40635317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40635291 and 40635300.

It is not an unprimeable number, because it can be changed into a prime (40635311) 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 15 ways as a sum of consecutive naturals, for example, 36840 + ... + 37926.

It is an arithmetic number, because the mean of its divisors is an integer number (3593664).

Almost surely, 2^40635321 is an apocalyptic number.

It is an amenable number.

40635321 is a deficient number, since it is larger than the sum of its proper divisors (16863303).

40635321 is a wasteful number, since it uses less digits than its factorization.

40635321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 40635321 is about 6374.5839864261. The cubic root of 40635321 is about 343.7963262744.

Adding to 40635321 its reverse (12353604), we get a palindrome (52988925).

The spelling of 40635321 in words is "forty million, six hundred thirty-five thousand, three hundred twenty-one".