289021947899 has 4 divisors (see below), whose sum is σ = 289208535600. Its totient is φ = 288835360200.

The previous prime is 289021947829. The next prime is 289021947919. The reversal of 289021947899 is 998749120982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289021947899 - 2¹² = 289021943803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289021947829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93291527 + ... + 93294624.

It is an arithmetic number, because the mean of its divisors is an integer number (72302133900).

Almost surely, 2^289021947899 is an apocalyptic number.

289021947899 is a deficient number, since it is larger than the sum of its proper divisors (186587701).

289021947899 is a wasteful number, since it uses less digits than its factorization.

289021947899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186587700.

The product of its (nonzero) digits is 47029248, while the sum is 68.

The spelling of 289021947899 in words is "two hundred eighty-nine billion, twenty-one million, nine hundred forty-seven thousand, eight hundred ninety-nine".