9849640 has 16 divisors (see below), whose sum is σ = 22161780. Its totient is φ = 3939840.

The previous prime is 9849629. The next prime is 9849683. The reversal of 9849640 is 469489.

It can be written as a sum of positive squares in 2 ways, for example, as 9036036 + 813604 = 3006^2 + 902^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 246241 = 9849640 / (9 + 8 + 4 + 9 + 6 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 9849593 and 9849602.

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, 123081 + ... + 123160.

Almost surely, 2^9849640 is an apocalyptic number.

It is an amenable number.

9849640 is an abundant number, since it is smaller than the sum of its proper divisors (12312140).

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

9849640 is a wasteful number, since it uses less digits than its factorization.

9849640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246252 (or 246248 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 9849640 is about 3138.4136120021. The cubic root of 9849640 is about 214.3582086994.

The spelling of 9849640 in words is "nine million, eight hundred forty-nine thousand, six hundred forty".