1439048609 has 2 divisors, whose sum is σ = 1439048610. Its totient is φ = 1439048608.

The previous prime is 1439048591. The next prime is 1439048617. The reversal of 1439048609 is 9068409341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267360000 + 171688609 = 35600^2 + 13103^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439048609 - 2¹² = 1439044513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1439048609.

It is not a weakly prime, because it can be changed into another prime (1439045609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719524304 + 719524305.

It is an arithmetic number, because the mean of its divisors is an integer number (719524305).

Almost surely, 2^1439048609 is an apocalyptic number.

It is an amenable number.

1439048609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439048609 is an equidigital number, since it uses as much as digits as its factorization.

1439048609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1439048609 is about 37934.7941736870. The cubic root of 1439048609 is about 1128.9944873098.

The spelling of 1439048609 in words is "one billion, four hundred thirty-nine million, forty-eight thousand, six hundred nine".