9961392 has 80 divisors (see below), whose sum is σ = 30712320. Its totient is φ = 2720256.

The previous prime is 9961387. The next prime is 9961397. The reversal of 9961392 is 2931699.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9961387) and next prime (9961397).

It is a self number, because there is not a number n which added to its sum of digits gives 9961392.

It is not an unprimeable number, because it can be changed into a prime (9961397) 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, 7084 + ... + 8372.

It is an arithmetic number, because the mean of its divisors is an integer number (383904).

Almost surely, 2^9961392 is an apocalyptic number.

9961392 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9961392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15356160).

9961392 is an abundant number, since it is smaller than the sum of its proper divisors (20750928).

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

9961392 is a wasteful number, since it uses less digits than its factorization.

9961392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1324 counting only the distinct ones).

The product of its digits is 26244, while the sum is 39.

The square root of 9961392 is about 3156.1672959461. The cubic root of 9961392 is about 215.1658500373.

The spelling of 9961392 in words is "nine million, nine hundred sixty-one thousand, three hundred ninety-two".