8393457 has 4 divisors (see below), whose sum is σ = 11191280. Its totient is φ = 5595636.

The previous prime is 8393447. The next prime is 8393491. The reversal of 8393457 is 7543938.

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 8393457 - 2¹² = 8389361 is a prime.

It is a d-powerful number, because it can be written as 8⁷ + 3³ + 9⁶ + 3³ + 4 + 5 + 7⁸ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8393447) 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, 1398907 + ... + 1398912.

It is an arithmetic number, because the mean of its divisors is an integer number (2797820).

Almost surely, 2^8393457 is an apocalyptic number.

It is an amenable number.

8393457 is a deficient number, since it is larger than the sum of its proper divisors (2797823).

8393457 is a wasteful number, since it uses less digits than its factorization.

8393457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797822.

The product of its digits is 90720, while the sum is 39.

The square root of 8393457 is about 2897.1463546048. The cubic root of 8393457 is about 203.2264776423.

The spelling of 8393457 in words is "eight million, three hundred ninety-three thousand, four hundred fifty-seven".