40108399 has 2 divisors, whose sum is σ = 40108400. Its totient is φ = 40108398.

The previous prime is 40108391. The next prime is 40108417. The reversal of 40108399 is 99380104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40108399 - 2³ = 40108391 is a prime.

It is equal to p_2439835 and since 40108399 and 2439835 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40108391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20054199 + 20054200.

It is an arithmetic number, because the mean of its divisors is an integer number (20054200).

Almost surely, 2^40108399 is an apocalyptic number.

40108399 is a deficient number, since it is larger than the sum of its proper divisors (1).

40108399 is an equidigital number, since it uses as much as digits as its factorization.

40108399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 40108399 is about 6333.1192156788. The cubic root of 40108399 is about 342.3038434924.

The spelling of 40108399 in words is "forty million, one hundred eight thousand, three hundred ninety-nine".