43489785 has 32 divisors (see below), whose sum is σ = 71441280. Its totient is φ = 22583808.

The previous prime is 43489781. The next prime is 43489799. The reversal of 43489785 is 58798434.

It is not a de Polignac number, because 43489785 - 2² = 43489781 is a prime.

It is a super-2 number, since 2×43489785² = 3782722798692450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43489781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138789 + ... + 139101.

It is an arithmetic number, because the mean of its divisors is an integer number (2232540).

Almost surely, 2^43489785 is an apocalyptic number.

It is an amenable number.

43489785 is a deficient number, since it is larger than the sum of its proper divisors (27951495).

43489785 is a wasteful number, since it uses less digits than its factorization.

43489785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537.

The product of its digits is 967680, while the sum is 48.

The square root of 43489785 is about 6594.6785365172. The cubic root of 43489785 is about 351.6649516125.

The spelling of 43489785 in words is "forty-three million, four hundred eighty-nine thousand, seven hundred eighty-five".