42886779 has 16 divisors (see below), whose sum is σ = 63085344. Its totient is φ = 25747200.

The previous prime is 42886763. The next prime is 42886783. The reversal of 42886779 is 97768824.

It is not a de Polignac number, because 42886779 - 2⁴ = 42886763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42886709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11812 + ... + 15009.

It is an arithmetic number, because the mean of its divisors is an integer number (3942834).

Almost surely, 2^42886779 is an apocalyptic number.

42886779 is a deficient number, since it is larger than the sum of its proper divisors (20198565).

42886779 is a wasteful number, since it uses less digits than its factorization.

42886779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26878.

The product of its digits is 1354752, while the sum is 51.

The square root of 42886779 is about 6548.7998137063. The cubic root of 42886779 is about 350.0320487660.

The spelling of 42886779 in words is "forty-two million, eight hundred eighty-six thousand, seven hundred seventy-nine".