5999646989 has 4 divisors (see below), whose sum is σ = 6856739424. Its totient is φ = 5142554556.

The previous prime is 5999646971. The next prime is 5999647013. The reversal of 5999646989 is 9896469995.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5999646989 - 2¹⁶ = 5999581453 is a prime.

It is a super-2 number, since 2×5999646989² = 71991527985233532242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5999646589) 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 3 ways as a sum of consecutive naturals, for example, 428546207 + ... + 428546220.

It is an arithmetic number, because the mean of its divisors is an integer number (1714184856).

Almost surely, 2^5999646989 is an apocalyptic number.

It is an amenable number.

5999646989 is a deficient number, since it is larger than the sum of its proper divisors (857092435).

5999646989 is an equidigital number, since it uses as much as digits as its factorization.

5999646989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857092434.

The product of its digits is 340122240, while the sum is 74.

The square root of 5999646989 is about 77457.3882144241. The cubic root of 5999646989 is about 1817.0849552689.

The spelling of 5999646989 in words is "five billion, nine hundred ninety-nine million, six hundred forty-six thousand, nine hundred eighty-nine".