978396 has 12 divisors (see below), whose sum is σ = 2282952. Its totient is φ = 326128.

The previous prime is 978389. The next prime is 978403. The reversal of 978396 is 693879.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (978389) and next prime (978403).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978396.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40755 + ... + 40778.

It is an arithmetic number, because the mean of its divisors is an integer number (190246).

2⁹⁷⁸³⁹⁶ is an apocalyptic number.

It is an amenable number.

978396 is an abundant number, since it is smaller than the sum of its proper divisors (1304556).

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

978396 is a wasteful number, since it uses less digits than its factorization.

978396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81540 (or 81538 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 978396 is about 989.1390195519. The cubic root of 978396 is about 99.2746175930.

The spelling of 978396 in words is "nine hundred seventy-eight thousand, three hundred ninety-six".