38906817 has 8 divisors (see below), whose sum is σ = 51909600. Its totient is φ = 25920960.

The previous prime is 38906809. The next prime is 38906821. The reversal of 38906817 is 71860983.

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

It is not a de Polignac number, because 38906817 - 2³ = 38906809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38906807) 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, 2809 + ... + 9257.

It is an arithmetic number, because the mean of its divisors is an integer number (6488700).

Almost surely, 2^38906817 is an apocalyptic number.

It is an amenable number.

38906817 is a deficient number, since it is larger than the sum of its proper divisors (13002783).

38906817 is a wasteful number, since it uses less digits than its factorization.

38906817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 38906817 is about 6237.5329257648. The cubic root of 38906817 is about 338.8508406545.

The spelling of 38906817 in words is "thirty-eight million, nine hundred six thousand, eight hundred seventeen".