9917956 has 6 divisors (see below), whose sum is σ = 17356430. Its totient is φ = 4958976.

The previous prime is 9917939. The next prime is 9917969. The reversal of 9917956 is 6597199.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 1988100 = 2816^2 + 1410^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239741 + ... + 1239748.

Almost surely, 2^9917956 is an apocalyptic number.

It is an amenable number.

9917956 is a deficient number, since it is larger than the sum of its proper divisors (7438474).

9917956 is a wasteful number, since it uses less digits than its factorization.

9917956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479493 (or 2479491 counting only the distinct ones).

The product of its digits is 153090, while the sum is 46.

The square root of 9917956 is about 3149.2786475636. The cubic root of 9917956 is about 214.8526554894.

It can be divided in two parts, 99179 and 56, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 9917956 in words is "nine million, nine hundred seventeen thousand, nine hundred fifty-six".