4490987 has 2 divisors, whose sum is σ = 4490988. Its totient is φ = 4490986.

The previous prime is 4490977. The next prime is 4490989. The reversal of 4490987 is 7890944.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4490987 - 2¹⁸ = 4228843 is a prime.

Together with 4490989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4490989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245493 + 2245494.

It is an arithmetic number, because the mean of its divisors is an integer number (2245494).

Almost surely, 2^4490987 is an apocalyptic number.

4490987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4490987 is an equidigital number, since it uses as much as digits as its factorization.

4490987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 4490987 is about 2119.1948942936. The cubic root of 4490987 is about 164.9860655511.

The spelling of 4490987 in words is "four million, four hundred ninety thousand, nine hundred eighty-seven".