38856421 has 8 divisors (see below), whose sum is σ = 39441600. Its totient is φ = 38274720.

The previous prime is 38856413. The next prime is 38856427. The reversal of 38856421 is 12465883.

It is a happy number.

38856421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38856421 - 2³ = 38856413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38856427) 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 7 ways as a sum of consecutive naturals, for example, 28800 + ... + 30118.

It is an arithmetic number, because the mean of its divisors is an integer number (4930200).

Almost surely, 2^38856421 is an apocalyptic number.

It is an amenable number.

38856421 is a deficient number, since it is larger than the sum of its proper divisors (585179).

38856421 is a wasteful number, since it uses less digits than its factorization.

38856421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its digits is 46080, while the sum is 37.

The square root of 38856421 is about 6233.4918785541. The cubic root of 38856421 is about 338.7044729419.

The spelling of 38856421 in words is "thirty-eight million, eight hundred fifty-six thousand, four hundred twenty-one".