9919140 has 192 divisors, whose sum is σ = 36771840. Its totient is φ = 1935360.

The previous prime is 9919097. The next prime is 9919183. The reversal of 9919140 is 419199.

9919140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9919097) and next prime (9919183).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87724 + ... + 87836.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

Almost surely, 2^9919140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9919140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18385920).

9919140 is an abundant number, since it is smaller than the sum of its proper divisors (26852700).

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

9919140 is a wasteful number, since it uses less digits than its factorization.

9919140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 9919140 is about 3149.4666215091. The cubic root of 9919140 is about 214.8612048122.

The spelling of 9919140 in words is "nine million, nine hundred nineteen thousand, one hundred forty".