985688399 has 8 divisors (see below), whose sum is σ = 1017134448. Its totient is φ = 954495360.

The previous prime is 985688393. The next prime is 985688411. The reversal of 985688399 is 993886589.

985688399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 985688399 - 2²⁴ = 968911183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985688393) 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, 55322 + ... + 70935.

It is an arithmetic number, because the mean of its divisors is an integer number (127141806).

Almost surely, 2^985688399 is an apocalyptic number.

985688399 is a deficient number, since it is larger than the sum of its proper divisors (31446049).

985688399 is a wasteful number, since it uses less digits than its factorization.

985688399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126505.

The product of its digits is 33592320, while the sum is 65.

The square root of 985688399 is about 31395.6748454305. The cubic root of 985688399 is about 995.2065256509.

The spelling of 985688399 in words is "nine hundred eighty-five million, six hundred eighty-eight thousand, three hundred ninety-nine".