9805144 has 8 divisors (see below), whose sum is σ = 18384660. Its totient is φ = 4902568.

The previous prime is 9805099. The next prime is 9805157. The reversal of 9805144 is 4415089.

It is a happy number.

9805144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×9805144² = 192281697721472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612814 + ... + 612829.

Almost surely, 2^9805144 is an apocalyptic number.

It is an amenable number.

9805144 is a deficient number, since it is larger than the sum of its proper divisors (8579516).

9805144 is a wasteful number, since it uses less digits than its factorization.

9805144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225649 (or 1225645 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 9805144 is about 3131.3166559772. The cubic root of 9805144 is about 214.0349318468.

The spelling of 9805144 in words is "nine million, eight hundred five thousand, one hundred forty-four".