984863985 has 24 divisors (see below), whose sum is σ = 1833054336. Its totient is φ = 450223200.

The previous prime is 984863981. The next prime is 984864019. The reversal of 984863985 is 589368489.

It is a happy number.

It is not a de Polignac number, because 984863985 - 2² = 984863981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (984863981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669241 + ... + 670710.

It is an arithmetic number, because the mean of its divisors is an integer number (76377264).

Almost surely, 2^984863985 is an apocalyptic number.

It is an amenable number.

984863985 is a deficient number, since it is larger than the sum of its proper divisors (848190351).

984863985 is a wasteful number, since it uses less digits than its factorization.

984863985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339973 (or 1339966 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The square root of 984863985 is about 31382.5426790118. The cubic root of 984863985 is about 994.9289899914.

The spelling of 984863985 in words is "nine hundred eighty-four million, eight hundred sixty-three thousand, nine hundred eighty-five".