9818949 has 16 divisors (see below), whose sum is σ = 15367808. Its totient is φ = 5458752.

The previous prime is 9818947. The next prime is 9818959. The reversal of 9818949 is 9498189.

9818949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9818949 - 2¹ = 9818947 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9818898 and 9818907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9818947) 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, 5542 + ... + 7095.

It is an arithmetic number, because the mean of its divisors is an integer number (960488).

Almost surely, 2^9818949 is an apocalyptic number.

It is an amenable number.

9818949 is a deficient number, since it is larger than the sum of its proper divisors (5548859).

9818949 is a wasteful number, since it uses less digits than its factorization.

9818949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12684.

The product of its digits is 186624, while the sum is 48.

The square root of 9818949 is about 3133.5202249228. The cubic root of 9818949 is about 214.1353337929.

The spelling of 9818949 in words is "nine million, eight hundred eighteen thousand, nine hundred forty-nine".