40204387 has 2 divisors, whose sum is σ = 40204388. Its totient is φ = 40204386.

The previous prime is 40204379. The next prime is 40204421. The reversal of 40204387 is 78340204.

40204387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40204387 - 2³ = 40204379 is a prime.

It is not a weakly prime, because it can be changed into another prime (40204327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102193 + 20102194.

It is an arithmetic number, because the mean of its divisors is an integer number (20102194).

Almost surely, 2^40204387 is an apocalyptic number.

40204387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204387 is an equidigital number, since it uses as much as digits as its factorization.

40204387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40204387 is about 6340.6929432042. The cubic root of 40204387 is about 342.5766947788.

The spelling of 40204387 in words is "forty million, two hundred four thousand, three hundred eighty-seven".