40638113 has 4 divisors (see below), whose sum is σ = 41244720. Its totient is φ = 40031508.

The previous prime is 40638107. The next prime is 40638119. The reversal of 40638113 is 31183604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (40638107) and next prime (40638119).

It is a cyclic number.

It is not a de Polignac number, because 40638113 - 2⁶ = 40638049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40638119) 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 in 3 ways as a sum of consecutive naturals, for example, 303203 + ... + 303336.

It is an arithmetic number, because the mean of its divisors is an integer number (10311180).

Almost surely, 2^40638113 is an apocalyptic number.

It is an amenable number.

40638113 is a deficient number, since it is larger than the sum of its proper divisors (606607).

40638113 is an equidigital number, since it uses as much as digits as its factorization.

40638113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606606.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 40638113 is about 6374.8029773476. The cubic root of 40638113 is about 343.8042000267.

The spelling of 40638113 in words is "forty million, six hundred thirty-eight thousand, one hundred thirteen".