38928399 has 8 divisors (see below), whose sum is σ = 51933360. Its totient is φ = 25937856.

The previous prime is 38928391. The next prime is 38928427. The reversal of 38928399 is 99382983.

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

It is not a de Polignac number, because 38928399 - 2³ = 38928391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38928391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8749 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (6491670).

Almost surely, 2^38928399 is an apocalyptic number.

38928399 is a deficient number, since it is larger than the sum of its proper divisors (13004961).

38928399 is a wasteful number, since it uses less digits than its factorization.

38928399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209.

The product of its digits is 839808, while the sum is 51.

The square root of 38928399 is about 6239.2626968256. The cubic root of 38928399 is about 338.9134837217.

The spelling of 38928399 in words is "thirty-eight million, nine hundred twenty-eight thousand, three hundred ninety-nine".