38912739 has 4 divisors (see below), whose sum is σ = 51883656. Its totient is φ = 25941824.

The previous prime is 38912689. The next prime is 38912743. The reversal of 38912739 is 93721983.

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 38912739 - 2⁷ = 38912611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38912739.

It is not an unprimeable number, because it can be changed into a prime (38912039) 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, 6485454 + ... + 6485459.

It is an arithmetic number, because the mean of its divisors is an integer number (12970914).

Almost surely, 2^38912739 is an apocalyptic number.

38912739 is a deficient number, since it is larger than the sum of its proper divisors (12970917).

38912739 is a wasteful number, since it uses less digits than its factorization.

38912739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970916.

The product of its digits is 81648, while the sum is 42.

The square root of 38912739 is about 6238.0076146154. The cubic root of 38912739 is about 338.8680319253.

The spelling of 38912739 in words is "thirty-eight million, nine hundred twelve thousand, seven hundred thirty-nine".