4971987 has 12 divisors (see below), whose sum is σ = 7215624. Its totient is φ = 3299040.

The previous prime is 4971971. The next prime is 4971991. The reversal of 4971987 is 7891794.

It is not a de Polignac number, because 4971987 - 2⁴ = 4971971 is a prime.

It is a super-4 number, since 4×4971987⁴ (a number of 28 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (4971907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 912 + ... + 3282.

It is an arithmetic number, because the mean of its divisors is an integer number (601302).

Almost surely, 2^4971987 is an apocalyptic number.

4971987 is a deficient number, since it is larger than the sum of its proper divisors (2243637).

4971987 is a wasteful number, since it uses less digits than its factorization.

4971987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 2607 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 4971987 is about 2229.7952820831. The cubic root of 4971987 is about 170.6776527114.

The spelling of 4971987 in words is "four million, nine hundred seventy-one thousand, nine hundred eighty-seven".