829985439 has 8 divisors (see below), whose sum is σ = 1108038960. Its totient is φ = 552627776.

The previous prime is 829985437. The next prime is 829985461. The reversal of 829985439 is 934589928.

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

It is a cyclic number.

It is not a de Polignac number, because 829985439 - 2¹ = 829985437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (829985437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171174 + ... + 175955.

It is an arithmetic number, because the mean of its divisors is an integer number (138504870).

Almost surely, 2^829985439 is an apocalyptic number.

829985439 is a deficient number, since it is larger than the sum of its proper divisors (278053521).

829985439 is a wasteful number, since it uses less digits than its factorization.

829985439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347929.

The product of its digits is 5598720, while the sum is 57.

The square root of 829985439 is about 28809.4678708233. The cubic root of 829985439 is about 939.7741418281.

The spelling of 829985439 in words is "eight hundred twenty-nine million, nine hundred eighty-five thousand, four hundred thirty-nine".