40118719 has 2 divisors, whose sum is σ = 40118720. Its totient is φ = 40118718.

The previous prime is 40118713. The next prime is 40118731. The reversal of 40118719 is 91781104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40118719 - 2⁷ = 40118591 is a prime.

It is a super-2 number, since 2×40118719² = 3219023228401922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40118713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20059359 + 20059360.

It is an arithmetic number, because the mean of its divisors is an integer number (20059360).

Almost surely, 2^40118719 is an apocalyptic number.

40118719 is a deficient number, since it is larger than the sum of its proper divisors (1).

40118719 is an equidigital number, since it uses as much as digits as its factorization.

40118719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 40118719 is about 6333.9339276630. The cubic root of 40118719 is about 342.3331995443. Note that the first 3 decimals are identical.

The spelling of 40118719 in words is "forty million, one hundred eighteen thousand, seven hundred nineteen".