987329489 has 4 divisors (see below), whose sum is σ = 989934960. Its totient is φ = 984724020.

The previous prime is 987329461. The next prime is 987329501. The reversal of 987329489 is 984923789.

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 987329489 - 2²⁰ = 986280913 is a prime.

It is a super-2 number, since 2×987329489² = 1949639039698002242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987329419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302167 + ... + 1302924.

It is an arithmetic number, because the mean of its divisors is an integer number (247483740).

Almost surely, 2^987329489 is an apocalyptic number.

It is an amenable number.

987329489 is a deficient number, since it is larger than the sum of its proper divisors (2605471).

987329489 is a wasteful number, since it uses less digits than its factorization.

987329489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605470.

The product of its digits is 7838208, while the sum is 59.

The square root of 987329489 is about 31421.7995824555. The cubic root of 987329489 is about 995.7585317149.

The spelling of 987329489 in words is "nine hundred eighty-seven million, three hundred twenty-nine thousand, four hundred eighty-nine".