38387117 has 8 divisors (see below), whose sum is σ = 39368760. Its totient is φ = 37416960.

The previous prime is 38387101. The next prime is 38387119. The reversal of 38387117 is 71178383.

It can be written as a sum of positive squares in 4 ways, for example, as 6056521 + 32330596 = 2461^2 + 5686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38387117 - 2⁴ = 38387101 is a prime.

It is a Duffinian number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38387119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4109 + ... + 9677.

It is an arithmetic number, because the mean of its divisors is an integer number (4921095).

Almost surely, 2^38387117 is an apocalyptic number.

It is an amenable number.

38387117 is a deficient number, since it is larger than the sum of its proper divisors (981643).

38387117 is a wasteful number, since it uses less digits than its factorization.

38387117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743.

The product of its digits is 28224, while the sum is 38.

The square root of 38387117 is about 6195.7337741385. The cubic root of 38387117 is about 337.3353329318.

The spelling of 38387117 in words is "thirty-eight million, three hundred eighty-seven thousand, one hundred seventeen".