9961240 has 32 divisors (see below), whose sum is σ = 22595760. Its totient is φ = 3952000.

The previous prime is 9961213. The next prime is 9961243. The reversal of 9961240 is 421699.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4290 + ... + 6190.

Almost surely, 2^9961240 is an apocalyptic number.

It is an amenable number.

9961240 is an abundant number, since it is smaller than the sum of its proper divisors (12634520).

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

9961240 is a wasteful number, since it uses less digits than its factorization.

9961240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9961240 is about 3156.1432160154. The cubic root of 9961240 is about 215.1647556328.

It can be divided in two parts, 9961 and 240, that added together give a palindrome (10201).

The spelling of 9961240 in words is "nine million, nine hundred sixty-one thousand, two hundred forty".