85443970 has 8 divisors (see below), whose sum is σ = 153799164. Its totient is φ = 34177584.

The previous prime is 85443929. The next prime is 85443973. The reversal of 85443970 is 7934458.

It can be written as a sum of positive squares in 2 ways, for example, as 85322169 + 121801 = 9237^2 + 349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85443973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4272189 + ... + 4272208.

Almost surely, 2^85443970 is an apocalyptic number.

85443970 is a deficient number, since it is larger than the sum of its proper divisors (68355194).

85443970 is a wasteful number, since it uses less digits than its factorization.

85443970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8544404.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 85443970 is about 9243.5907525160. The cubic root of 85443970 is about 440.4471521748.

The spelling of 85443970 in words is "eighty-five million, four hundred forty-three thousand, nine hundred seventy".