3721489 has 2 divisors, whose sum is σ = 3721490. Its totient is φ = 3721488.

The previous prime is 3721477. The next prime is 3721537. The reversal of 3721489 is 9841273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3027600 + 693889 = 1740^2 + 833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3721489 is a prime.

It is not a weakly prime, because it can be changed into another prime (3721409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860744 + 1860745.

It is an arithmetic number, because the mean of its divisors is an integer number (1860745).

Almost surely, 2^3721489 is an apocalyptic number.

It is an amenable number.

3721489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3721489 is an equidigital number, since it uses as much as digits as its factorization.

3721489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 3721489 is about 1929.1161188482. The cubic root of 3721489 is about 154.9668885220.

The spelling of 3721489 in words is "three million, seven hundred twenty-one thousand, four hundred eighty-nine".