4989637 has 2 divisors, whose sum is σ = 4989638. Its totient is φ = 4989636.

The previous prime is 4989613. The next prime is 4989641. The reversal of 4989637 is 7369894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4866436 + 123201 = 2206^2 + 351^2 .

It is a cyclic number.

It is not a de Polignac number, because 4989637 - 2¹¹ = 4987589 is a prime.

4989637 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4989697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494818 + 2494819.

It is an arithmetic number, because the mean of its divisors is an integer number (2494819).

Almost surely, 2^4989637 is an apocalyptic number.

It is an amenable number.

4989637 is a deficient number, since it is larger than the sum of its proper divisors (1).

4989637 is an equidigital number, since it uses as much as digits as its factorization.

4989637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 4989637 is about 2233.7495383324. The cubic root of 4989637 is about 170.8793764187.

The spelling of 4989637 in words is "four million, nine hundred eighty-nine thousand, six hundred thirty-seven".