3720020489 has 2 divisors, whose sum is σ = 3720020490. Its totient is φ = 3720020488.

The previous prime is 3720020471. The next prime is 3720020503. The reversal of 3720020489 is 9840200273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3490800889 + 229219600 = 59083^2 + 15140^2 .

It is an emirp because it is prime and its reverse (9840200273) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3720020489 - 2²⁴ = 3703243273 is a prime.

It is not a weakly prime, because it can be changed into another prime (3720020389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1860010244 + 1860010245.

It is an arithmetic number, because the mean of its divisors is an integer number (1860010245).

Almost surely, 2^3720020489 is an apocalyptic number.

It is an amenable number.

3720020489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3720020489 is an equidigital number, since it uses as much as digits as its factorization.

3720020489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 3720020489 is about 60991.9706928707. The cubic root of 3720020489 is about 1549.4650237010.

The spelling of 3720020489 in words is "three billion, seven hundred twenty million, twenty thousand, four hundred eighty-nine".