9869947 has 8 divisors (see below), whose sum is σ = 10265040. Its totient is φ = 9478560.

The previous prime is 9869939. The next prime is 9869957. The reversal of 9869947 is 7499689.

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

It is a cyclic number.

It is not a de Polignac number, because 9869947 - 2³ = 9869939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9869894 and 9869903.

It is not an unprimeable number, because it can be changed into a prime (9869917) 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, 5313 + ... + 6925.

It is an arithmetic number, because the mean of its divisors is an integer number (1283130).

Almost surely, 2^9869947 is an apocalyptic number.

9869947 is a deficient number, since it is larger than the sum of its proper divisors (395093).

9869947 is a wasteful number, since it uses less digits than its factorization.

9869947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its digits is 979776, while the sum is 52.

The square root of 9869947 is about 3141.6471794267. The cubic root of 9869947 is about 214.5054216621.

It can be divided in two parts, 9869 and 947, that added together give a square (10816 = 104²).

The spelling of 9869947 in words is "nine million, eight hundred sixty-nine thousand, nine hundred forty-seven".