38788921 has 8 divisors (see below), whose sum is σ = 40636800. Its totient is φ = 36975120.

The previous prime is 38788877. The next prime is 38788943. The reversal of 38788921 is 12988783.

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

It is a cyclic number.

It is not a de Polignac number, because 38788921 - 2⁷ = 38788793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38788121) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6175 + ... + 10756.

It is an arithmetic number, because the mean of its divisors is an integer number (5079600).

Almost surely, 2^38788921 is an apocalyptic number.

It is an amenable number.

38788921 is a deficient number, since it is larger than the sum of its proper divisors (1847879).

38788921 is a wasteful number, since it uses less digits than its factorization.

38788921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17039.

The product of its digits is 193536, while the sum is 46.

The square root of 38788921 is about 6228.0752243370. The cubic root of 38788921 is about 338.5082307868.

The spelling of 38788921 in words is "thirty-eight million, seven hundred eighty-eight thousand, nine hundred twenty-one".