9897956 has 6 divisors (see below), whose sum is σ = 17321430. Its totient is φ = 4948976.

The previous prime is 9897941. The next prime is 9897971. The reversal of 9897956 is 6597989.

9897956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9897941) and next prime (9897971).

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 1136356 = 2960^2 + 1066^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9897898 and 9897907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237241 + ... + 1237248.

It is an arithmetic number, because the mean of its divisors is an integer number (2886905).

Almost surely, 2^9897956 is an apocalyptic number.

It is an amenable number.

9897956 is a deficient number, since it is larger than the sum of its proper divisors (7423474).

9897956 is a wasteful number, since it uses less digits than its factorization.

9897956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474493 (or 2474491 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 9897956 is about 3146.1017148211. The cubic root of 9897956 is about 214.7081383211.

The spelling of 9897956 in words is "nine million, eight hundred ninety-seven thousand, nine hundred fifty-six".