38384391 has 4 divisors (see below), whose sum is σ = 51179192. Its totient is φ = 25589592.

The previous prime is 38384387. The next prime is 38384393. The reversal of 38384391 is 19348383.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38384391 - 2² = 38384387 is a prime.

It is a super-2 number, since 2×38384391² = 2946722944881762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38384393) 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, 6397396 + ... + 6397401.

It is an arithmetic number, because the mean of its divisors is an integer number (12794798).

Almost surely, 2^38384391 is an apocalyptic number.

38384391 is a deficient number, since it is larger than the sum of its proper divisors (12794801).

38384391 is a wasteful number, since it uses less digits than its factorization.

38384391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12794800.

The product of its digits is 62208, while the sum is 39.

The square root of 38384391 is about 6195.5137801477. The cubic root of 38384391 is about 337.3273476322.

The spelling of 38384391 in words is "thirty-eight million, three hundred eighty-four thousand, three hundred ninety-one".