9799947 has 16 divisors (see below), whose sum is σ = 14700960. Its totient is φ = 6531840.

The previous prime is 9799927. The next prime is 9799957. The reversal of 9799947 is 7499979.

It is not a de Polignac number, because 9799947 - 2⁷ = 9799819 is a prime.

It is a super-2 number, since 2×9799947² = 192077922405618, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9799893 and 9799902.

It is not an unprimeable number, because it can be changed into a prime (9799927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54 + ... + 4427.

It is an arithmetic number, because the mean of its divisors is an integer number (918810).

Almost surely, 2^9799947 is an apocalyptic number.

9799947 is a deficient number, since it is larger than the sum of its proper divisors (4901013).

9799947 is an frugal number, since it uses more digits than its factorization.

9799947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4502 (or 4484 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 9799947 is about 3130.4867033738. The cubic root of 9799947 is about 213.9971103345.

Subtracting from 9799947 its reverse (7499979), we obtain a cube (2299968 = 132³).

The spelling of 9799947 in words is "nine million, seven hundred ninety-nine thousand, nine hundred forty-seven".