986666047 has 4 divisors (see below), whose sum is σ = 1018494016. Its totient is φ = 954838080.

The previous prime is 986666039. The next prime is 986666059. The reversal of 986666047 is 740666689.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 986666047 - 2³ = 986666039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 986665985 and 986666003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (986666017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15913938 + ... + 15913999.

It is an arithmetic number, because the mean of its divisors is an integer number (254623504).

Almost surely, 2^986666047 is an apocalyptic number.

986666047 is a deficient number, since it is larger than the sum of its proper divisors (31827969).

986666047 is a wasteful number, since it uses less digits than its factorization.

986666047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31827968.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The square root of 986666047 is about 31411.2407746017. The cubic root of 986666047 is about 995.5354464242.

The spelling of 986666047 in words is "nine hundred eighty-six million, six hundred sixty-six thousand, forty-seven".