9561834440 has 16 divisors (see below), whose sum is σ = 21514127580. Its totient is φ = 3824733760.

The previous prime is 9561834437. The next prime is 9561834479. The reversal of 9561834440 is 444381659.

It can be written as a sum of positive squares in 2 ways, for example, as 9559755076 + 2079364 = 97774^2 + 1442^2 .

It is a super-2 number, since 2×9561834440² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9561834391 and 9561834400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119522891 + ... + 119522970.

Almost surely, 2^9561834440 is an apocalyptic number.

It is an amenable number.

9561834440 is an abundant number, since it is smaller than the sum of its proper divisors (11952293140).

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

9561834440 is a wasteful number, since it uses less digits than its factorization.

9561834440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239045872 (or 239045868 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 9561834440 is about 97784.6329440368. The cubic root of 9561834440 is about 2122.4969422399.

The spelling of 9561834440 in words is "nine billion, five hundred sixty-one million, eight hundred thirty-four thousand, four hundred forty".