439237489 has 2 divisors, whose sum is σ = 439237490. Its totient is φ = 439237488.

The previous prime is 439237439. The next prime is 439237493. The reversal of 439237489 is 984732934.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371718400 + 67519089 = 19280^2 + 8217^2 .

It is a cyclic number.

It is not a de Polignac number, because 439237489 - 2¹⁵ = 439204721 is a prime.

It is not a weakly prime, because it can be changed into another prime (439237439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219618744 + 219618745.

It is an arithmetic number, because the mean of its divisors is an integer number (219618745).

Almost surely, 2^439237489 is an apocalyptic number.

It is an amenable number.

439237489 is a deficient number, since it is larger than the sum of its proper divisors (1).

439237489 is an equidigital number, since it uses as much as digits as its factorization.

439237489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 439237489 is about 20957.9934392584. The cubic root of 439237489 is about 760.1508755171.

The spelling of 439237489 in words is "four hundred thirty-nine million, two hundred thirty-seven thousand, four hundred eighty-nine".