40112091 has 10 divisors (see below), whose sum is σ = 59920652. Its totient is φ = 26741340.

The previous prime is 40112081. The next prime is 40112117. The reversal of 40112091 is 19021104.

It is not a de Polignac number, because 40112091 - 2⁷ = 40111963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40112081) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 247525 + ... + 247686.

Almost surely, 2^40112091 is an apocalyptic number.

40112091 is a deficient number, since it is larger than the sum of its proper divisors (19808561).

40112091 is an equidigital number, since it uses as much as digits as its factorization.

40112091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495223 (or 495214 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 40112091 is about 6333.4106925100. The cubic root of 40112091 is about 342.3143462553.

Adding to 40112091 its reverse (19021104), we get a palindrome (59133195).

The spelling of 40112091 in words is "forty million, one hundred twelve thousand, ninety-one".