2987971 has 18 divisors (see below), whose sum is σ = 3709788. Its totient is φ = 2399040.

The previous prime is 2987969. The next prime is 2987983. The reversal of 2987971 is 1797892.

It is a happy number.

It is not a de Polignac number, because 2987971 - 2¹ = 2987969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2987911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14056 + ... + 14266.

2^2987971 is an apocalyptic number.

2987971 is a deficient number, since it is larger than the sum of its proper divisors (721817).

2987971 is a wasteful number, since it uses less digits than its factorization.

2987971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 235 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 2987971 is about 1728.5748465137. The cubic root of 2987971 is about 144.0319341470.

The spelling of 2987971 in words is "two million, nine hundred eighty-seven thousand, nine hundred seventy-one".