8456945 has 32 divisors (see below), whose sum is σ = 12192768. Its totient is φ = 5511168.

The previous prime is 8456927. The next prime is 8456969. The reversal of 8456945 is 5496548.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8456945 - 2¹⁴ = 8440561 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87137 + ... + 87233.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

Almost surely, 2^8456945 is an apocalyptic number.

It is an amenable number.

8456945 is a deficient number, since it is larger than the sum of its proper divisors (3735823).

8456945 is a wasteful number, since it uses less digits than its factorization.

8456945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its digits is 172800, while the sum is 41.

The square root of 8456945 is about 2908.0827017126. The cubic root of 8456945 is about 203.7375919276.

The spelling of 8456945 in words is "eight million, four hundred fifty-six thousand, nine hundred forty-five".