8470397 has 8 divisors (see below), whose sum is σ = 9225720. Its totient is φ = 7729920.

The previous prime is 8470393. The next prime is 8470421. The reversal of 8470397 is 7930748.

8470397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1012036 + 7458361 = 1006^2 + 2731^2 .

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 8470397 - 2² = 8470393 is a prime.

It is an Ulam 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 8470397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8470393) 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, 2504 + ... + 4817.

It is an arithmetic number, because the mean of its divisors is an integer number (1153215).

Almost surely, 2^8470397 is an apocalyptic number.

It is an amenable number.

8470397 is a deficient number, since it is larger than the sum of its proper divisors (755323).

8470397 is a wasteful number, since it uses less digits than its factorization.

8470397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 8470397 is about 2910.3946467790. The cubic root of 8470397 is about 203.8455594509.

The spelling of 8470397 in words is "eight million, four hundred seventy thousand, three hundred ninety-seven".