8399473 has 4 divisors (see below), whose sum is σ = 8689140. Its totient is φ = 8109808.

The previous prime is 8399459. The next prime is 8399477. The reversal of 8399473 is 3749938.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2862864 + 5536609 = 1692^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 8399473 - 2⁵ = 8399441 is a prime.

It is a super-2 number, since 2×8399473² = 141102293355458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8399477) 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, 144790 + ... + 144847.

It is an arithmetic number, because the mean of its divisors is an integer number (2172285).

Almost surely, 2^8399473 is an apocalyptic number.

It is an amenable number.

8399473 is a deficient number, since it is larger than the sum of its proper divisors (289667).

8399473 is a wasteful number, since it uses less digits than its factorization.

8399473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289666.

The product of its digits is 163296, while the sum is 43.

The square root of 8399473 is about 2898.1844316744. The cubic root of 8399473 is about 203.2750201560.

The spelling of 8399473 in words is "eight million, three hundred ninety-nine thousand, four hundred seventy-three".