4912987 has 4 divisors (see below), whose sum is σ = 4982256. Its totient is φ = 4843720.

The previous prime is 4912981. The next prime is 4912991. The reversal of 4912987 is 7892194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4912987 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4912981) 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, 34528 + ... + 34669.

It is an arithmetic number, because the mean of its divisors is an integer number (1245564).

Almost surely, 2^4912987 is an apocalyptic number.

4912987 is a deficient number, since it is larger than the sum of its proper divisors (69269).

4912987 is an equidigital number, since it uses as much as digits as its factorization.

4912987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69268.

The product of its digits is 36288, while the sum is 40.

The square root of 4912987 is about 2216.5258852538. The cubic root of 4912987 is about 169.9998500575. Note that the first 3 decimals are identical.

The spelling of 4912987 in words is "four million, nine hundred twelve thousand, nine hundred eighty-seven".