9886961240 has 64 divisors (see below), whose sum is σ = 24998500800. Its totient is φ = 3491845632.

The previous prime is 9886961237. The next prime is 9886961243. The reversal of 9886961240 is 421696889.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9886961237) and next prime (9886961243).

It is a super-2 number, since 2×9886961240² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9886961243) 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, 401375 + ... + 425294.

It is an arithmetic number, because the mean of its divisors is an integer number (390601575).

Almost surely, 2^9886961240 is an apocalyptic number.

It is an amenable number.

9886961240 is an abundant number, since it is smaller than the sum of its proper divisors (15111539560).

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

9886961240 is a wasteful number, since it uses less digits than its factorization.

9886961240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826716 (or 826712 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 9886961240 is about 99433.1998881661. The cubic root of 9886961240 is about 2146.2860880086.

The spelling of 9886961240 in words is "nine billion, eight hundred eighty-six million, nine hundred sixty-one thousand, two hundred forty".