40478899 has 2 divisors, whose sum is σ = 40478900. Its totient is φ = 40478898.

The previous prime is 40478831. The next prime is 40478903. The reversal of 40478899 is 99887404.

40478899 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 40478899 - 2⁷ = 40478771 is a prime.

It is not a weakly prime, because it can be changed into another prime (40478299) 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, 20239449 + 20239450.

It is an arithmetic number, because the mean of its divisors is an integer number (20239450).

Almost surely, 2^40478899 is an apocalyptic number.

40478899 is a deficient number, since it is larger than the sum of its proper divisors (1).

40478899 is an equidigital number, since it uses as much as digits as its factorization.

40478899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 40478899 is about 6362.3029635502. The cubic root of 40478899 is about 343.3546213798.

The spelling of 40478899 in words is "forty million, four hundred seventy-eight thousand, eight hundred ninety-nine".