4749989 has 2 divisors, whose sum is σ = 4749990. Its totient is φ = 4749988.

The previous prime is 4749967. The next prime is 4749991. The reversal of 4749989 is 9899474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4656964 + 93025 = 2158^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4749989 is a prime.

Together with 4749991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4749289) 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, 2374994 + 2374995.

It is an arithmetic number, because the mean of its divisors is an integer number (2374995).

Almost surely, 2^4749989 is an apocalyptic number.

It is an amenable number.

4749989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4749989 is an equidigital number, since it uses as much as digits as its factorization.

4749989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 4749989 is about 2179.4469481958. The cubic root of 4749989 is about 168.0986405794.

The spelling of 4749989 in words is "four million, seven hundred forty-nine thousand, nine hundred eighty-nine".