8279745 has 16 divisors (see below), whose sum is σ = 13571712. Its totient is φ = 4307840.

The previous prime is 8279743. The next prime is 8279771. The reversal of 8279745 is 5479728.

It is not a de Polignac number, because 8279745 - 2¹ = 8279743 is a prime.

It is a super-3 number, since 3×8279745³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8279697 and 8279706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8279741) 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 15 ways as a sum of consecutive naturals, for example, 6117 + ... + 7346.

It is an arithmetic number, because the mean of its divisors is an integer number (848232).

Almost surely, 2^8279745 is an apocalyptic number.

It is an amenable number.

8279745 is a deficient number, since it is larger than the sum of its proper divisors (5291967).

8279745 is a wasteful number, since it uses less digits than its factorization.

8279745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13512.

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

The square root of 8279745 is about 2877.4546043335. The cubic root of 8279745 is about 202.3045515493.

The spelling of 8279745 in words is "eight million, two hundred seventy-nine thousand, seven hundred forty-five".