984999521 has 8 divisors (see below), whose sum is σ = 1084588704. Its totient is φ = 887084320.

The previous prime is 984999503. The next prime is 984999557. The reversal of 984999521 is 125999489.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984999521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (984993521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417260 + ... + 419613.

It is an arithmetic number, because the mean of its divisors is an integer number (135573588).

Almost surely, 2^984999521 is an apocalyptic number.

It is an amenable number.

984999521 is a deficient number, since it is larger than the sum of its proper divisors (99589183).

984999521 is a wasteful number, since it uses less digits than its factorization.

984999521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836991.

The product of its digits is 2099520, while the sum is 56.

The square root of 984999521 is about 31384.7020218450. The cubic root of 984999521 is about 994.9746282766.

The spelling of 984999521 in words is "nine hundred eighty-four million, nine hundred ninety-nine thousand, five hundred twenty-one".