38849631 has 4 divisors (see below), whose sum is σ = 51799512. Its totient is φ = 25899752.

The previous prime is 38849627. The next prime is 38849639. The reversal of 38849631 is 13694883.

It is a happy number.

38849631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13694883 = 3 ⋅4564961.

It is a cyclic number.

It is not a de Polignac number, because 38849631 - 2² = 38849627 is a prime.

It is a super-2 number, since 2×38849631² = 3018587657672322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38849639) 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 3 ways as a sum of consecutive naturals, for example, 6474936 + ... + 6474941.

It is an arithmetic number, because the mean of its divisors is an integer number (12949878).

Almost surely, 2^38849631 is an apocalyptic number.

38849631 is a deficient number, since it is larger than the sum of its proper divisors (12949881).

38849631 is a wasteful number, since it uses less digits than its factorization.

38849631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949880.

The product of its digits is 124416, while the sum is 42.

The square root of 38849631 is about 6232.9472162052. The cubic root of 38849631 is about 338.6847427206.

The spelling of 38849631 in words is "thirty-eight million, eight hundred forty-nine thousand, six hundred thirty-one".