9678399 has 4 divisors (see below), whose sum is σ = 12904536. Its totient is φ = 6452264.

The previous prime is 9678379. The next prime is 9678401. The reversal of 9678399 is 9938769.

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

It is a cyclic number.

It is not a de Polignac number, because 9678399 - 2⁵ = 9678367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9678329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613064 + ... + 1613069.

It is an arithmetic number, because the mean of its divisors is an integer number (3226134).

Almost surely, 2^9678399 is an apocalyptic number.

9678399 is a deficient number, since it is larger than the sum of its proper divisors (3226137).

9678399 is a wasteful number, since it uses less digits than its factorization.

9678399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226136.

The product of its digits is 734832, while the sum is 51.

The square root of 9678399 is about 3111.0125361367. The cubic root of 9678399 is about 213.1086971932.

The spelling of 9678399 in words is "nine million, six hundred seventy-eight thousand, three hundred ninety-nine".