40045879 has 2 divisors, whose sum is σ = 40045880. Its totient is φ = 40045878.

The previous prime is 40045853. The next prime is 40045891. The reversal of 40045879 is 97854004.

40045879 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 40045879 - 2⁵ = 40045847 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 (40045849) 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, 20022939 + 20022940.

It is an arithmetic number, because the mean of its divisors is an integer number (20022940).

Almost surely, 2^40045879 is an apocalyptic number.

40045879 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045879 is an equidigital number, since it uses as much as digits as its factorization.

40045879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 40045879 is about 6328.1813343172. The cubic root of 40045879 is about 342.1258926877.

The spelling of 40045879 in words is "forty million, forty-five thousand, eight hundred seventy-nine".