985431447 has 192 divisors, whose sum is σ = 2089221120. Its totient is φ = 443232000.

The previous prime is 985431437. The next prime is 985431449. The reversal of 985431447 is 744134589.

985431447 is a `hidden beast` number, since 98 + 543 + 14 + 4 + 7 = 666.

It is not a de Polignac number, because 985431447 - 2⁷ = 985431319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985431449) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9756697 + ... + 9756797.

It is an arithmetic number, because the mean of its divisors is an integer number (10881360).

Almost surely, 2^985431447 is an apocalyptic number.

985431447 is an abundant number, since it is smaller than the sum of its proper divisors (1103789673).

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

985431447 is a wasteful number, since it uses less digits than its factorization.

985431447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 154 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 985431447 is about 31391.5824226814. The cubic root of 985431447 is about 995.1200403981.

The spelling of 985431447 in words is "nine hundred eighty-five million, four hundred thirty-one thousand, four hundred forty-seven".