38982521 has 4 divisors (see below), whose sum is σ = 39019344. Its totient is φ = 38945700.

The previous prime is 38982481. The next prime is 38982529. The reversal of 38982521 is 12528983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38982521 - 2¹⁸ = 38720377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38982529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16775 + ... + 18956.

It is an arithmetic number, because the mean of its divisors is an integer number (9754836).

Almost surely, 2^38982521 is an apocalyptic number.

It is an amenable number.

38982521 is a deficient number, since it is larger than the sum of its proper divisors (36823).

38982521 is a wasteful number, since it uses less digits than its factorization.

38982521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36822.

The product of its digits is 34560, while the sum is 38.

The square root of 38982521 is about 6243.5984015630. The cubic root of 38982521 is about 339.0704743507.

The spelling of 38982521 in words is "thirty-eight million, nine hundred eighty-two thousand, five hundred twenty-one".