38934788221 has 8 divisors (see below), whose sum is σ = 45582191424. Its totient is φ = 32558707680.

The previous prime is 38934788219. The next prime is 38934788251. The reversal of 38934788221 is 12288743983.

It is a happy number.

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 38934788221 - 2¹ = 38934788219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38934788251) 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, 67830355 + ... + 67830928.

It is an arithmetic number, because the mean of its divisors is an integer number (5697773928).

Almost surely, 2^38934788221 is an apocalyptic number.

It is an amenable number.

38934788221 is a deficient number, since it is larger than the sum of its proper divisors (6647403203).

38934788221 is a wasteful number, since it uses less digits than its factorization.

38934788221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135661331.

The product of its digits is 4644864, while the sum is 55.

The spelling of 38934788221 in words is "thirty-eight billion, nine hundred thirty-four million, seven hundred eighty-eight thousand, two hundred twenty-one".