42779863 has 8 divisors (see below), whose sum is σ = 49376160. Its totient is φ = 36304800.

The previous prime is 42779861. The next prime is 42779903. The reversal of 42779863 is 36897724.

42779863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42779863 - 2¹ = 42779861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779861) 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 in 7 ways as a sum of consecutive naturals, for example, 29548 + ... + 30961.

It is an arithmetic number, because the mean of its divisors is an integer number (6172020).

Almost surely, 2^42779863 is an apocalyptic number.

42779863 is a deficient number, since it is larger than the sum of its proper divisors (6596297).

42779863 is a wasteful number, since it uses less digits than its factorization.

42779863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60617.

The product of its digits is 508032, while the sum is 46.

The square root of 42779863 is about 6540.6316973210. The cubic root of 42779863 is about 349.7409320963.

The spelling of 42779863 in words is "forty-two million, seven hundred seventy-nine thousand, eight hundred sixty-three".