3147986 has 8 divisors (see below), whose sum is σ = 4756860. Its totient is φ = 1562368.

The previous prime is 3147983. The next prime is 3148001. The reversal of 3147986 is 6897413.

It can be written as a sum of positive squares in 2 ways, for example, as 3115225 + 32761 = 1765^2 + 181^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471 + ... + 6018.

Almost surely, 2^3147986 is an apocalyptic number.

3147986 is a deficient number, since it is larger than the sum of its proper divisors (1608874).

3147986 is a wasteful number, since it uses less digits than its factorization.

3147986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11628.

The product of its digits is 36288, while the sum is 38.

The square root of 3147986 is about 1774.2564639871. The cubic root of 3147986 is about 146.5584727777.

The spelling of 3147986 in words is "three million, one hundred forty-seven thousand, nine hundred eighty-six".