40109412 has 96 divisors (see below), whose sum is σ = 112451584. Its totient is φ = 10886400.

The previous prime is 40109387. The next prime is 40109413. The reversal of 40109412 is 21490104.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40109413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189987 + ... + 190197.

Almost surely, 2^40109412 is an apocalyptic number.

40109412 is a gapful number since it is divisible by the number (42) 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 40109412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56225792).

40109412 is an abundant number, since it is smaller than the sum of its proper divisors (72342172).

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

40109412 is a wasteful number, since it uses less digits than its factorization.

40109412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 40109412 is about 6333.1991915619. The cubic root of 40109412 is about 342.3067252735.

Adding to 40109412 its reverse (21490104), we get a palindrome (61599516).

The spelling of 40109412 in words is "forty million, one hundred nine thousand, four hundred twelve".