9945897 has 8 divisors (see below), whose sum is σ = 14281344. Its totient is φ = 6120528.

The previous prime is 9945889. The next prime is 9945919. The reversal of 9945897 is 7985499.

It is a happy number.

9945897 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.

It is not a de Polignac number, because 9945897 - 2³ = 9945889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9945847) 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, 127473 + ... + 127550.

It is an arithmetic number, because the mean of its divisors is an integer number (1785168).

Almost surely, 2^9945897 is an apocalyptic number.

It is an amenable number.

9945897 is a deficient number, since it is larger than the sum of its proper divisors (4335447).

9945897 is a wasteful number, since it uses less digits than its factorization.

9945897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255039.

The product of its digits is 816480, while the sum is 51.

The square root of 9945897 is about 3153.7116228343. The cubic root of 9945897 is about 215.0542282537.

The spelling of 9945897 in words is "nine million, nine hundred forty-five thousand, eight hundred ninety-seven".