38864739 has 4 divisors (see below), whose sum is σ = 51819656. Its totient is φ = 25909824.

The previous prime is 38864729. The next prime is 38864743. The reversal of 38864739 is 93746883.

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

It is not a de Polignac number, because 38864739 - 2¹⁹ = 38340451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38864719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6477454 + ... + 6477459.

It is an arithmetic number, because the mean of its divisors is an integer number (12954914).

Almost surely, 2^38864739 is an apocalyptic number.

38864739 is a deficient number, since it is larger than the sum of its proper divisors (12954917).

38864739 is a wasteful number, since it uses less digits than its factorization.

38864739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12954916.

The product of its digits is 870912, while the sum is 48.

The square root of 38864739 is about 6234.1590451319. The cubic root of 38864739 is about 338.7286400569.

The spelling of 38864739 in words is "thirty-eight million, eight hundred sixty-four thousand, seven hundred thirty-nine".