40875638 has 4 divisors (see below), whose sum is σ = 61313460. Its totient is φ = 20437818.

The previous prime is 40875629. The next prime is 40875641. The reversal of 40875638 is 83657804.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40875595 and 40875604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10218908 + ... + 10218911.

It is an arithmetic number, because the mean of its divisors is an integer number (15328365).

Almost surely, 2^40875638 is an apocalyptic number.

40875638 is a deficient number, since it is larger than the sum of its proper divisors (20437822).

40875638 is a wasteful number, since it uses less digits than its factorization.

40875638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20437821.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 40875638 is about 6393.4058216259. The cubic root of 40875638 is about 344.4727309487.

The spelling of 40875638 in words is "forty million, eight hundred seventy-five thousand, six hundred thirty-eight".