987044069 has 12 divisors (see below), whose sum is σ = 1105410348. Its totient is φ = 880376640.

The previous prime is 987044033. The next prime is 987044081. The reversal of 987044069 is 960440789.

It can be written as a sum of positive squares in 2 ways, for example, as 337456900 + 649587169 = 18370^2 + 25487^2 .

It is a de Polignac number, because none of the positive numbers 2^k-987044069 is a prime.

It is a super-2 number, since 2×987044069² = 1948511988296153522, 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 (987044369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70544 + ... + 83369.

It is an arithmetic number, because the mean of its divisors is an integer number (92117529).

Almost surely, 2^987044069 is an apocalyptic number.

It is an amenable number.

987044069 is a deficient number, since it is larger than the sum of its proper divisors (118366279).

987044069 is a wasteful number, since it uses less digits than its factorization.

987044069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153988 (or 153977 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 987044069 is about 31417.2575028439. The cubic root of 987044069 is about 995.6625702368.

It can be divided in two parts, 9 and 87044069, that added together give a palindrome (87044078).

The spelling of 987044069 in words is "nine hundred eighty-seven million, forty-four thousand, sixty-nine".