38939321 has 4 divisors (see below), whose sum is σ = 39219600. Its totient is φ = 38659044.

The previous prime is 38939309. The next prime is 38939371. The reversal of 38939321 is 12393983.

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 38939321 - 2¹⁴ = 38922937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38939371) 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, 139931 + ... + 140208.

It is an arithmetic number, because the mean of its divisors is an integer number (9804900).

Almost surely, 2^38939321 is an apocalyptic number.

It is an amenable number.

38939321 is a deficient number, since it is larger than the sum of its proper divisors (280279).

38939321 is a wasteful number, since it uses less digits than its factorization.

38939321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280278.

The product of its digits is 34992, while the sum is 38.

The square root of 38939321 is about 6240.1378991173. The cubic root of 38939321 is about 338.9451766677.

The spelling of 38939321 in words is "thirty-eight million, nine hundred thirty-nine thousand, three hundred twenty-one".