4981987 has 4 divisors (see below), whose sum is σ = 4991400. Its totient is φ = 4972576.

The previous prime is 4981981. The next prime is 4981993. The reversal of 4981987 is 7891894.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4981981) and next prime (4981993).

It is a cyclic number.

It is not a de Polignac number, because 4981987 - 2¹¹ = 4979939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4981981) 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, 3862 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (1247850).

Almost surely, 2^4981987 is an apocalyptic number.

4981987 is a deficient number, since it is larger than the sum of its proper divisors (9413).

4981987 is an equidigital number, since it uses as much as digits as its factorization.

4981987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9412.

The product of its digits is 145152, while the sum is 46.

The square root of 4981987 is about 2232.0365140382. The cubic root of 4981987 is about 170.7920022691.

It can be divided in two parts, 498 and 1987, that added together give a triangular number (2485 = T₇₀).

The spelling of 4981987 in words is "four million, nine hundred eighty-one thousand, nine hundred eighty-seven".