9439812 has 18 divisors (see below), whose sum is σ = 23861838. Its totient is φ = 3146592.

The previous prime is 9439757. The next prime is 9439853. The reversal of 9439812 is 2189349.

It can be written as a sum of positive squares in only one way, i.e., 9326916 + 112896 = 3054^2 + 336^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×9439812² = 178220101190688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 262217 = 9439812 / (9 + 4 + 3 + 9 + 8 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131073 + ... + 131144.

Almost surely, 2^9439812 is an apocalyptic number.

It is an amenable number.

9439812 is an abundant number, since it is smaller than the sum of its proper divisors (14422026).

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

9439812 is a wasteful number, since it uses less digits than its factorization.

9439812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262227 (or 262222 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 9439812 is about 3072.4277046010. The cubic root of 9439812 is about 211.3429580502.

The spelling of 9439812 in words is "nine million, four hundred thirty-nine thousand, eight hundred twelve".