38968391 has 8 divisors (see below), whose sum is σ = 48584064. Its totient is φ = 30364920.

The previous prime is 38968387. The next prime is 38968399. The reversal of 38968391 is 19386983.

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 38968391 - 2² = 38968387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38968399) 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, 252965 + ... + 253118.

It is an arithmetic number, because the mean of its divisors is an integer number (6073008).

Almost surely, 2^38968391 is an apocalyptic number.

38968391 is a deficient number, since it is larger than the sum of its proper divisors (9615673).

38968391 is a wasteful number, since it uses less digits than its factorization.

38968391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506101.

The product of its digits is 279936, while the sum is 47.

The square root of 38968391 is about 6242.4667399995. The cubic root of 38968391 is about 339.0295017587.

The spelling of 38968391 in words is "thirty-eight million, nine hundred sixty-eight thousand, three hundred ninety-one".