40408007 has 2 divisors, whose sum is σ = 40408008. Its totient is φ = 40408006.

The previous prime is 40407989. The next prime is 40408019. The reversal of 40408007 is 70080404.

40408007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40408007 - 2⁶ = 40407943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40408057) 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, 20204003 + 20204004.

It is an arithmetic number, because the mean of its divisors is an integer number (20204004).

Almost surely, 2^40408007 is an apocalyptic number.

40408007 is a deficient number, since it is larger than the sum of its proper divisors (1).

40408007 is an equidigital number, since it uses as much as digits as its factorization.

40408007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 40408007 is about 6356.7292690502. The cubic root of 40408007 is about 343.1540615816.

The spelling of 40408007 in words is "forty million, four hundred eight thousand, seven".