43920085 has 16 divisors (see below), whose sum is σ = 58288320. Its totient is φ = 31501440.

The previous prime is 43920053. The next prime is 43920089. The reversal of 43920085 is 58002934.

It is not a de Polignac number, because 43920085 - 2⁵ = 43920053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43920089) 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, 1455 + ... + 9484.

It is an arithmetic number, because the mean of its divisors is an integer number (3643020).

Almost surely, 2^43920085 is an apocalyptic number.

It is an amenable number.

43920085 is a deficient number, since it is larger than the sum of its proper divisors (14368235).

43920085 is a wasteful number, since it uses less digits than its factorization.

43920085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11028.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 43920085 is about 6627.2230232579. The cubic root of 43920085 is about 352.8209708321.

The spelling of 43920085 in words is "forty-three million, nine hundred twenty thousand, eighty-five".