38709949 has 4 divisors (see below), whose sum is σ = 38789280. Its totient is φ = 38630620.

The previous prime is 38709947. The next prime is 38709953. The reversal of 38709949 is 94990783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94990783 = 6863 ⋅13841.

It is a cyclic number.

It is not a de Polignac number, because 38709949 - 2¹ = 38709947 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38709941) 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, 38929 + ... + 39910.

It is an arithmetic number, because the mean of its divisors is an integer number (9697320).

Almost surely, 2^38709949 is an apocalyptic number.

It is an amenable number.

38709949 is a deficient number, since it is larger than the sum of its proper divisors (79331).

38709949 is an equidigital number, since it uses as much as digits as its factorization.

38709949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79330.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 38709949 is about 6221.7319935851. The cubic root of 38709949 is about 338.2783469787.

The spelling of 38709949 in words is "thirty-eight million, seven hundred nine thousand, nine hundred forty-nine".