8279457 has 4 divisors (see below), whose sum is σ = 11039280. Its totient is φ = 5519636.

The previous prime is 8279423. The next prime is 8279461. The reversal of 8279457 is 7549728.

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 a cyclic number.

It is not a de Polignac number, because 8279457 - 2⁷ = 8279329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8279407) 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, 1379907 + ... + 1379912.

It is an arithmetic number, because the mean of its divisors is an integer number (2759820).

Almost surely, 2^8279457 is an apocalyptic number.

It is an amenable number.

8279457 is a deficient number, since it is larger than the sum of its proper divisors (2759823).

8279457 is a wasteful number, since it uses less digits than its factorization.

8279457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759822.

The product of its digits is 141120, while the sum is 42.

The square root of 8279457 is about 2877.4045596683. The cubic root of 8279457 is about 202.3022058899.

The spelling of 8279457 in words is "eight million, two hundred seventy-nine thousand, four hundred fifty-seven".