43470945 has 64 divisors (see below), whose sum is σ = 89187840. Its totient is φ = 19678464.

The previous prime is 43470907. The next prime is 43470961. The reversal of 43470945 is 54907434.

It is not a de Polignac number, because 43470945 - 2⁶ = 43470881 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148219 + ... + 148511.

It is an arithmetic number, because the mean of its divisors is an integer number (1393560).

Almost surely, 2^43470945 is an apocalyptic number.

43470945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43470945 is the 3297-th decagonal number.

It is an amenable number.

43470945 is an abundant number, since it is smaller than the sum of its proper divisors (45716895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43470945 is a wasteful number, since it uses less digits than its factorization.

43470945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 43470945 is about 6593.2499573427. The cubic root of 43470945 is about 351.6141632520.

The spelling of 43470945 in words is "forty-three million, four hundred seventy thousand, nine hundred forty-five".