38470209 has 8 divisors (see below), whose sum is σ = 52261632. Its totient is φ = 25162800.

The previous prime is 38470151. The next prime is 38470213. The reversal of 38470209 is 90207483.

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

It is a de Polignac number, because none of the positive numbers 2^k-38470209 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 38470209.

It is not an unprimeable number, because it can be changed into a prime (38470279) 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, 120817 + ... + 121134.

It is an arithmetic number, because the mean of its divisors is an integer number (6532704).

Almost surely, 2^38470209 is an apocalyptic number.

It is an amenable number.

38470209 is a deficient number, since it is larger than the sum of its proper divisors (13791423).

38470209 is a wasteful number, since it uses less digits than its factorization.

38470209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242007.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 38470209 is about 6202.4357312269. The cubic root of 38470209 is about 337.5785540057.

The spelling of 38470209 in words is "thirty-eight million, four hundred seventy thousand, two hundred nine".