38471917 has 4 divisors (see below), whose sum is σ = 41969376. Its totient is φ = 34974460.

The previous prime is 38471891. The next prime is 38471921. The reversal of 38471917 is 71917483.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38471917 is a prime.

It is a Smith number, since the sum of its digits (40) 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 self number, because there is not a number n which added to its sum of digits gives 38471917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38471947) 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, 1748713 + ... + 1748734.

It is an arithmetic number, because the mean of its divisors is an integer number (10492344).

Almost surely, 2^38471917 is an apocalyptic number.

It is an amenable number.

38471917 is a deficient number, since it is larger than the sum of its proper divisors (3497459).

38471917 is a wasteful number, since it uses less digits than its factorization.

38471917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3497458.

The product of its digits is 42336, while the sum is 40.

The square root of 38471917 is about 6202.5734175421. The cubic root of 38471917 is about 337.5835498684.

The spelling of 38471917 in words is "thirty-eight million, four hundred seventy-one thousand, nine hundred seventeen".