8470389 has 4 divisors (see below), whose sum is σ = 11293856. Its totient is φ = 5646924.

The previous prime is 8470381. The next prime is 8470393. The reversal of 8470389 is 9830748.

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 not a de Polignac number, because 8470389 - 2³ = 8470381 is a prime.

It is a super-2 number, since 2×8470389² = 143494979622642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8470381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1411729 + ... + 1411734.

It is an arithmetic number, because the mean of its divisors is an integer number (2823464).

Almost surely, 2^8470389 is an apocalyptic number.

It is an amenable number.

8470389 is a deficient number, since it is larger than the sum of its proper divisors (2823467).

8470389 is a wasteful number, since it uses less digits than its factorization.

8470389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823466.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 8470389 is about 2910.3932723946. The cubic root of 8470389 is about 203.8454952759.

The spelling of 8470389 in words is "eight million, four hundred seventy thousand, three hundred eighty-nine".