3147987 has 16 divisors (see below), whose sum is σ = 4485888. Its totient is φ = 1958880.

The previous prime is 3147983. The next prime is 3148001. The reversal of 3147987 is 7897413.

It is not a de Polignac number, because 3147987 - 2² = 3147983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3147983) 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, 2437 + ... + 3497.

It is an arithmetic number, because the mean of its divisors is an integer number (280368).

Almost surely, 2^3147987 is an apocalyptic number.

3147987 is a deficient number, since it is larger than the sum of its proper divisors (1337901).

3147987 is a wasteful number, since it uses less digits than its factorization.

3147987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its digits is 42336, while the sum is 39.

The square root of 3147987 is about 1774.2567457953. The cubic root of 3147987 is about 146.5584882965.

The spelling of 3147987 in words is "three million, one hundred forty-seven thousand, nine hundred eighty-seven".