789549945987 has 32 divisors (see below), whose sum is σ = 1179423866880. Its totient is φ = 465717391520.

The previous prime is 789549945953. The next prime is 789549945997.

It is a happy number.

789549945987 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 789549945987 - 2⁸ = 789549945731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (789549945997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1144323 + ... + 1699580.

It is an arithmetic number, because the mean of its divisors is an integer number (36856995840).

Almost surely, 2^789549945987 is an apocalyptic number.

789549945987 is a deficient number, since it is larger than the sum of its proper divisors (389873920893).

789549945987 is a wasteful number, since it uses less digits than its factorization.

789549945987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844143.

The product of its digits is 8230118400, while the sum is 84.

The spelling of 789549945987 in words is "seven hundred eighty-nine billion, five hundred forty-nine million, nine hundred forty-five thousand, nine hundred eighty-seven".