9640398 has 8 divisors (see below), whose sum is σ = 19280808. Its totient is φ = 3213464.

The previous prime is 9640373. The next prime is 9640417. The reversal of 9640398 is 8930469.

9640398 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

9640398 is an admirable number.

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

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, 803361 + ... + 803372.

It is an arithmetic number, because the mean of its divisors is an integer number (2410101).

Almost surely, 2^9640398 is an apocalyptic number.

9640398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9640398 is a wasteful number, since it uses less digits than its factorization.

9640398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606738.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 9640398 is about 3104.8990321748. The cubic root of 9640398 is about 212.8294166421.

The spelling of 9640398 in words is "nine million, six hundred forty thousand, three hundred ninety-eight".