978369 has 8 divisors (see below), whose sum is σ = 1490880. Its totient is φ = 559056.

The previous prime is 978359. The next prime is 978389. The reversal of 978369 is 963879.

It is a happy number.

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

It is not a de Polignac number, because 978369 - 2⁵ = 978337 is a prime.

It is a super-2 number, since 2×978369² = 1914411800322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 978369.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978369.

It is not an unprimeable number, because it can be changed into a prime (978349) 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, 23274 + ... + 23315.

It is an arithmetic number, because the mean of its divisors is an integer number (186360).

2⁹⁷⁸³⁶⁹ is an apocalyptic number.

It is an amenable number.

978369 is a deficient number, since it is larger than the sum of its proper divisors (512511).

978369 is a wasteful number, since it uses less digits than its factorization.

978369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46599.

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

The square root of 978369 is about 989.1253712245. The cubic root of 978369 is about 99.2737043843.

The spelling of 978369 in words is "nine hundred seventy-eight thousand, three hundred sixty-nine".