9947641 has 8 divisors (see below), whose sum is σ = 10965024. Its totient is φ = 8949120.

The previous prime is 9947627. The next prime is 9947653. The reversal of 9947641 is 1467499.

It is a happy number.

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 9947641 - 2⁷ = 9947513 is a prime.

It is a super-2 number, since 2×9947641² = 197911122929762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9947594 and 9947603.

It is not an unprimeable number, because it can be changed into a prime (9947611) 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, 3595 + ... + 5728.

It is an arithmetic number, because the mean of its divisors is an integer number (1370628).

Almost surely, 2^9947641 is an apocalyptic number.

It is an amenable number.

9947641 is a deficient number, since it is larger than the sum of its proper divisors (1017383).

9947641 is a wasteful number, since it uses less digits than its factorization.

9947641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9431.

The product of its digits is 54432, while the sum is 40.

The square root of 9947641 is about 3153.9881103137. The cubic root of 9947641 is about 215.0667973448.

The spelling of 9947641 in words is "nine million, nine hundred forty-seven thousand, six hundred forty-one".