8356945 has 8 divisors (see below), whose sum is σ = 10618344. Its totient is φ = 6292224.

The previous prime is 8356919. The next prime is 8356961. The reversal of 8356945 is 5496538.

It can be written as a sum of positive squares in 4 ways, for example, as 1971216 + 6385729 = 1404^2 + 2527^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8356945 - 2¹¹ = 8354897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8356898 and 8356907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49074 + ... + 49243.

It is an arithmetic number, because the mean of its divisors is an integer number (1327293).

Almost surely, 2^8356945 is an apocalyptic number.

8356945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8356945 is a deficient number, since it is larger than the sum of its proper divisors (2261399).

8356945 is a wasteful number, since it uses less digits than its factorization.

8356945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98339.

The product of its digits is 129600, while the sum is 40.

The square root of 8356945 is about 2890.8381137656. The cubic root of 8356945 is about 202.9313671904.

The spelling of 8356945 in words is "eight million, three hundred fifty-six thousand, nine hundred forty-five".