38339891 has 4 divisors (see below), whose sum is σ = 40357800. Its totient is φ = 36321984.

The previous prime is 38339887. The next prime is 38339893. The reversal of 38339891 is 19893383.

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

It is a cyclic number.

It is not a de Polignac number, because 38339891 - 2² = 38339887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38339893) 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, 1008926 + ... + 1008963.

It is an arithmetic number, because the mean of its divisors is an integer number (10089450).

Almost surely, 2^38339891 is an apocalyptic number.

38339891 is a deficient number, since it is larger than the sum of its proper divisors (2017909).

38339891 is a wasteful number, since it uses less digits than its factorization.

38339891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017908.

The product of its digits is 139968, while the sum is 44.

The square root of 38339891 is about 6191.9214303801. The cubic root of 38339891 is about 337.1969398352.

The spelling of 38339891 in words is "thirty-eight million, three hundred thirty-nine thousand, eight hundred ninety-one".