989078 has 4 divisors (see below), whose sum is σ = 1483620. Its totient is φ = 494538.

The previous prime is 989071. The next prime is 989081. The reversal of 989078 is 870989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 870989 = 7 ⋅124427.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247268 + ... + 247271.

It is an arithmetic number, because the mean of its divisors is an integer number (370905).

2⁹⁸⁹⁰⁷⁸ is an apocalyptic number.

989078 is a deficient number, since it is larger than the sum of its proper divisors (494542).

989078 is a wasteful number, since it uses less digits than its factorization.

989078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494541.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 989078 is about 994.5240067490. The cubic root of 989078 is about 99.6345997864.

The spelling of 989078 in words is "nine hundred eighty-nine thousand, seventy-eight".