987249942789 has 16 divisors (see below), whose sum is σ = 1436024553984. Its totient is φ = 598323033200.

The previous prime is 987249942761. The next prime is 987249942821.

987249942789 is nontrivially palindromic in base 10.

987249942789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 987249942789 - 2³⁹ = 437494128901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987249942589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989304 + ... + 2435534.

It is an arithmetic number, because the mean of its divisors is an integer number (89751534624).

Almost surely, 2^987249942789 is an apocalyptic number.

It is an amenable number.

987249942789 is a deficient number, since it is larger than the sum of its proper divisors (448774611195).

987249942789 is a wasteful number, since it uses less digits than its factorization.

987249942789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513288.

The product of its digits is 1316818944, while the sum is 78.

The spelling of 987249942789 in words is "nine hundred eighty-seven billion, two hundred forty-nine million, nine hundred forty-two thousand, seven hundred eighty-nine".