40638341 has 8 divisors (see below), whose sum is σ = 41618304. Its totient is φ = 39669840.

The previous prime is 40638331. The next prime is 40638343. The reversal of 40638341 is 14383604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40638341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40638343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4535 + ... + 10091.

It is an arithmetic number, because the mean of its divisors is an integer number (5202288).

Almost surely, 2^40638341 is an apocalyptic number.

It is an amenable number.

40638341 is a deficient number, since it is larger than the sum of its proper divisors (979963).

40638341 is a wasteful number, since it uses less digits than its factorization.

40638341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 40638341 is about 6374.8208602282. The cubic root of 40638341 is about 343.8048429963.

The spelling of 40638341 in words is "forty million, six hundred thirty-eight thousand, three hundred forty-one".