38774139 has 4 divisors (see below), whose sum is σ = 51698856. Its totient is φ = 25849424.

The previous prime is 38774137. The next prime is 38774143. The reversal of 38774139 is 93147783.

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 38774139 - 2¹ = 38774137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38774139.

It is not an unprimeable number, because it can be changed into a prime (38774137) 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, 6462354 + ... + 6462359.

It is an arithmetic number, because the mean of its divisors is an integer number (12924714).

Almost surely, 2^38774139 is an apocalyptic number.

38774139 is a deficient number, since it is larger than the sum of its proper divisors (12924717).

38774139 is a wasteful number, since it uses less digits than its factorization.

38774139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12924716.

The product of its digits is 127008, while the sum is 42.

The square root of 38774139 is about 6226.8883882723. Note that the first 3 decimals coincide. The cubic root of 38774139 is about 338.4652248261.

The spelling of 38774139 in words is "thirty-eight million, seven hundred seventy-four thousand, one hundred thirty-nine".