9947538 has 24 divisors (see below), whose sum is σ = 21703500. Its totient is φ = 3292704.

The previous prime is 9947527. The next prime is 9947573. The reversal of 9947538 is 8357499.

9947538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8838729 + 1108809 = 2973^2 + 1053^2 .

It is a super-2 number, since 2×9947538² = 197907024522888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9947493 and 9947502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 828 + ... + 4536.

Almost surely, 2^9947538 is an apocalyptic number.

9947538 is an abundant number, since it is smaller than the sum of its proper divisors (11755962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9947538 is a wasteful number, since it uses less digits than its factorization.

9947538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866 (or 3863 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 9947538 is about 3153.9717817381. The cubic root of 9947538 is about 215.0660550597.

The spelling of 9947538 in words is "nine million, nine hundred forty-seven thousand, five hundred thirty-eight".