40418899 has 2 divisors, whose sum is σ = 40418900. Its totient is φ = 40418898.

The previous prime is 40418891. The next prime is 40418923. The reversal of 40418899 is 99881404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40418899 - 2³ = 40418891 is a prime.

It is not a weakly prime, because it can be changed into another prime (40418891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20209449 + 20209450.

It is an arithmetic number, because the mean of its divisors is an integer number (20209450).

Almost surely, 2^40418899 is an apocalyptic number.

40418899 is a deficient number, since it is larger than the sum of its proper divisors (1).

40418899 is an equidigital number, since it uses as much as digits as its factorization.

40418899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 40418899 is about 6357.5859412201. The cubic root of 40418899 is about 343.1848912657.

The spelling of 40418899 in words is "forty million, four hundred eighteen thousand, eight hundred ninety-nine".