4989887 has 4 divisors (see below), whose sum is σ = 5702736. Its totient is φ = 4277040.

The previous prime is 4989863. The next prime is 4989917. The reversal of 4989887 is 7889894.

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 4989887 - 2¹⁸ = 4727743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989847) 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 3 ways as a sum of consecutive naturals, for example, 356414 + ... + 356427.

It is an arithmetic number, because the mean of its divisors is an integer number (1425684).

Almost surely, 2^4989887 is an apocalyptic number.

4989887 is a deficient number, since it is larger than the sum of its proper divisors (712849).

4989887 is an equidigital number, since it uses as much as digits as its factorization.

4989887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712848.

The product of its digits is 1161216, while the sum is 53.

The square root of 4989887 is about 2233.8054973520. The cubic root of 4989887 is about 170.8822302757.

The spelling of 4989887 in words is "four million, nine hundred eighty-nine thousand, eight hundred eighty-seven".