43854945 has 16 divisors (see below), whose sum is σ = 73861440. Its totient is φ = 22158144.

The previous prime is 43854919. The next prime is 43854949. The reversal of 43854945 is 54945834.

It is not a de Polignac number, because 43854945 - 2⁷ = 43854817 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 43854897 and 43854906.

It is not an unprimeable number, because it can be changed into a prime (43854949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76654 + ... + 77223.

It is an arithmetic number, because the mean of its divisors is an integer number (4616340).

Almost surely, 2^43854945 is an apocalyptic number.

It is an amenable number.

43854945 is a deficient number, since it is larger than the sum of its proper divisors (30006495).

43854945 is a wasteful number, since it uses less digits than its factorization.

43854945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153904.

The product of its digits is 345600, while the sum is 42.

The square root of 43854945 is about 6622.3066223182. The cubic root of 43854945 is about 352.6464559172.

The spelling of 43854945 in words is "forty-three million, eight hundred fifty-four thousand, nine hundred forty-five".