3179987 has 4 divisors (see below), whose sum is σ = 3220320. Its totient is φ = 3139656.

The previous prime is 3179983. The next prime is 3179993. The reversal of 3179987 is 7899713.

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 3179987 - 2² = 3179983 is a prime.

It is a super-2 number, since 2×3179987² = 20224634640338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3179983) 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, 20048 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (805080).

Almost surely, 2^3179987 is an apocalyptic number.

3179987 is a deficient number, since it is larger than the sum of its proper divisors (40333).

3179987 is an equidigital number, since it uses as much as digits as its factorization.

3179987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40332.

The product of its digits is 95256, while the sum is 44.

The square root of 3179987 is about 1783.2518049900. The cubic root of 3179987 is about 147.0534151140.

The spelling of 3179987 in words is "three million, one hundred seventy-nine thousand, nine hundred eighty-seven".