38921144 has 8 divisors (see below), whose sum is σ = 72977160. Its totient is φ = 19460568.

The previous prime is 38921131. The next prime is 38921173. The reversal of 38921144 is 44112983.

It is a happy number.

38921144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 38921144.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2432564 + ... + 2432579.

It is an arithmetic number, because the mean of its divisors is an integer number (9122145).

Almost surely, 2^38921144 is an apocalyptic number.

It is an amenable number.

38921144 is a deficient number, since it is larger than the sum of its proper divisors (34056016).

38921144 is a wasteful number, since it uses less digits than its factorization.

38921144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865149 (or 4865145 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 38921144 is about 6238.6812709097. The cubic root of 38921144 is about 338.8924282270.

The spelling of 38921144 in words is "thirty-eight million, nine hundred twenty-one thousand, one hundred forty-four".