3728489 has 2 divisors, whose sum is σ = 3728490. Its totient is φ = 3728488.

The previous prime is 3728479. The next prime is 3728509. The reversal of 3728489 is 9848273.

3728489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 1669264 = 1435^2 + 1292^2 .

It is an emirp because it is prime and its reverse (9848273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3728489 - 2¹² = 3724393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3728429) 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, 1864244 + 1864245.

It is an arithmetic number, because the mean of its divisors is an integer number (1864245).

Almost surely, 2^3728489 is an apocalyptic number.

It is an amenable number.

3728489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728489 is an equidigital number, since it uses as much as digits as its factorization.

3728489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 3728489 is about 1930.9295688864. The cubic root of 3728489 is about 155.0639902280.

It can be divided in two parts, 37284 and 89, that added together give a palindrome (37373).

The spelling of 3728489 in words is "three million, seven hundred twenty-eight thousand, four hundred eighty-nine".