38644135 has 8 divisors (see below), whose sum is σ = 47869056. Its totient is φ = 29917920.

The previous prime is 38644087. The next prime is 38644141. The reversal of 38644135 is 53144683.

It is a happy number.

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

It is not a de Polignac number, because 38644135 - 2⁷ = 38644007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38644135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124504 + ... + 124813.

It is an arithmetic number, because the mean of its divisors is an integer number (5983632).

Almost surely, 2^38644135 is an apocalyptic number.

38644135 is a deficient number, since it is larger than the sum of its proper divisors (9224921).

38644135 is a wasteful number, since it uses less digits than its factorization.

38644135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249353.

The product of its digits is 34560, while the sum is 34.

The square root of 38644135 is about 6216.4407018808. The cubic root of 38644135 is about 338.0865265213.

It can be divided in two parts, 386 and 44135, that added together give a square (44521 = 211²).

The spelling of 38644135 in words is "thirty-eight million, six hundred forty-four thousand, one hundred thirty-five".