989546078 has 4 divisors (see below), whose sum is σ = 1484319120. Its totient is φ = 494773038.

The previous prime is 989546059. The next prime is 989546083. The reversal of 989546078 is 870645989.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247386518 + ... + 247386521.

It is an arithmetic number, because the mean of its divisors is an integer number (371079780).

Almost surely, 2^989546078 is an apocalyptic number.

989546078 is a deficient number, since it is larger than the sum of its proper divisors (494773042).

989546078 is a wasteful number, since it uses less digits than its factorization.

989546078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494773041.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 989546078 is about 31457.0513239878. The cubic root of 989546078 is about 996.5031455958.

The spelling of 989546078 in words is "nine hundred eighty-nine million, five hundred forty-six thousand, seventy-eight".