989032387 has 8 divisors (see below), whose sum is σ = 1140326496. Its totient is φ = 840239232.

The previous prime is 989032367. The next prime is 989032411. The reversal of 989032387 is 783230989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989032387 - 2⁷ = 989032259 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989032387.

It is not an unprimeable number, because it can be changed into a prime (989032367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624388 + ... + 625969.

It is an arithmetic number, because the mean of its divisors is an integer number (142540812).

Almost surely, 2^989032387 is an apocalyptic number.

989032387 is a deficient number, since it is larger than the sum of its proper divisors (151294109).

989032387 is a wasteful number, since it uses less digits than its factorization.

989032387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250477.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 989032387 is about 31448.8853061599. The cubic root of 989032387 is about 996.3306815700.

The spelling of 989032387 in words is "nine hundred eighty-nine million, thirty-two thousand, three hundred eighty-seven".