85430983 has 4 divisors (see below), whose sum is σ = 93197448. Its totient is φ = 77664520.

The previous prime is 85430977. The next prime is 85430999. The reversal of 85430983 is 38903458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85430983 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85430923) 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, 3883216 + ... + 3883237.

It is an arithmetic number, because the mean of its divisors is an integer number (23299362).

Almost surely, 2^85430983 is an apocalyptic number.

85430983 is a deficient number, since it is larger than the sum of its proper divisors (7766465).

85430983 is a wasteful number, since it uses less digits than its factorization.

85430983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766464.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 85430983 is about 9242.8882390733. Note that the first 3 decimals coincide. The cubic root of 85430983 is about 440.4248358857.

The spelling of 85430983 in words is "eighty-five million, four hundred thirty thousand, nine hundred eighty-three".