42446879 has 2 divisors, whose sum is σ = 42446880. Its totient is φ = 42446878.

The previous prime is 42446867. The next prime is 42446897. The reversal of 42446879 is 97864424.

42446879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (42446897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42446879 - 2⁸ = 42446623 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 (42446809) 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, 21223439 + 21223440.

It is an arithmetic number, because the mean of its divisors is an integer number (21223440).

Almost surely, 2^42446879 is an apocalyptic number.

42446879 is a deficient number, since it is larger than the sum of its proper divisors (1).

42446879 is an equidigital number, since it uses as much as digits as its factorization.

42446879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 42446879 is about 6515.1269365992. The cubic root of 42446879 is about 348.8311457569.

The spelling of 42446879 in words is "forty-two million, four hundred forty-six thousand, eight hundred seventy-nine".