8479745 has 8 divisors (see below), whose sum is σ = 10526760. Its totient is φ = 6549760.

The previous prime is 8479741. The next prime is 8479747. The reversal of 8479745 is 5479748.

It is a Cunningham number, because it is equal to 2912²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3055504 + 5424241 = 1748^2 + 2329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8479745 - 2² = 8479741 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8479696 and 8479705.

It is not an unprimeable number, because it can be changed into a prime (8479741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29096 + ... + 29385.

It is an arithmetic number, because the mean of its divisors is an integer number (1315845).

Almost surely, 2^8479745 is an apocalyptic number.

It is an amenable number.

8479745 is a deficient number, since it is larger than the sum of its proper divisors (2047015).

8479745 is a wasteful number, since it uses less digits than its factorization.

8479745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58515.

The product of its digits is 282240, while the sum is 44.

The square root of 8479745 is about 2912.0001717033. Note that the first 3 decimals coincide. The cubic root of 8479745 is about 203.9205204288.

The spelling of 8479745 in words is "eight million, four hundred seventy-nine thousand, seven hundred forty-five".