42986777 has 4 divisors (see below), whose sum is σ = 43001616. Its totient is φ = 42971940.

The previous prime is 42986773. The next prime is 42986789. The reversal of 42986777 is 77768924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42986777 - 2² = 42986773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42986773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1499 + ... + 9392.

It is an arithmetic number, because the mean of its divisors is an integer number (10750404).

Almost surely, 2^42986777 is an apocalyptic number.

It is an amenable number.

42986777 is a deficient number, since it is larger than the sum of its proper divisors (14839).

42986777 is a wasteful number, since it uses less digits than its factorization.

42986777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14838.

The product of its digits is 1185408, while the sum is 50.

The square root of 42986777 is about 6556.4302024806. The cubic root of 42986777 is about 350.3038911690.

The spelling of 42986777 in words is "forty-two million, nine hundred eighty-six thousand, seven hundred seventy-seven".