989193440 has 24 divisors (see below), whose sum is σ = 2336969880. Its totient is φ = 395677312.

The previous prime is 989193391. The next prime is 989193463. The reversal of 989193440 is 44391989.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3091070 + ... + 3091389.

It is an arithmetic number, because the mean of its divisors is an integer number (97373745).

Almost surely, 2^989193440 is an apocalyptic number.

It is an amenable number.

989193440 is an abundant number, since it is smaller than the sum of its proper divisors (1347776440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989193440 is a wasteful number, since it uses less digits than its factorization.

989193440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182474 (or 6182466 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 989193440 is about 31451.4457537328. The cubic root of 989193440 is about 996.3847591171.

The spelling of 989193440 in words is "nine hundred eighty-nine million, one hundred ninety-three thousand, four hundred forty".