40191112 has 32 divisors (see below), whose sum is σ = 82313280. Its totient is φ = 18285120.

The previous prime is 40191101. The next prime is 40191113. The reversal of 40191112 is 21119104.

It is a self number, because there is not a number n which added to its sum of digits gives 40191112.

It is not an unprimeable number, because it can be changed into a prime (40191113) 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, 4663 + ... + 10105.

It is an arithmetic number, because the mean of its divisors is an integer number (2572290).

Almost surely, 2^40191112 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 40191112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41156640).

40191112 is an abundant number, since it is smaller than the sum of its proper divisors (42122168).

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

40191112 is a wasteful number, since it uses less digits than its factorization.

40191112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533 (or 5529 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 40191112 is about 6339.6460469020. The cubic root of 40191112 is about 342.5389857410.

The spelling of 40191112 in words is "forty million, one hundred ninety-one thousand, one hundred twelve".