40111087 has 2 divisors, whose sum is σ = 40111088. Its totient is φ = 40111086.

The previous prime is 40111081. The next prime is 40111129. The reversal of 40111087 is 78011104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40111087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40111081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20055543 + 20055544.

It is an arithmetic number, because the mean of its divisors is an integer number (20055544).

Almost surely, 2^40111087 is an apocalyptic number.

40111087 is a deficient number, since it is larger than the sum of its proper divisors (1).

40111087 is an equidigital number, since it uses as much as digits as its factorization.

40111087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 40111087 is about 6333.3314298243. The cubic root of 40111087 is about 342.3114902048.

The spelling of 40111087 in words is "forty million, one hundred eleven thousand, eighty-seven".