1489720049 has 2 divisors, whose sum is σ = 1489720050. Its totient is φ = 1489720048.

The previous prime is 1489720031. The next prime is 1489720069. The reversal of 1489720049 is 9400279841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1015569424 + 474150625 = 31868^2 + 21775^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489720049 - 2²⁸ = 1221284593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1489719991 and 1489720009.

It is not a weakly prime, because it can be changed into another prime (1489720069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744860024 + 744860025.

It is an arithmetic number, because the mean of its divisors is an integer number (744860025).

Almost surely, 2^1489720049 is an apocalyptic number.

It is an amenable number.

1489720049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489720049 is an equidigital number, since it uses as much as digits as its factorization.

1489720049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1489720049 is about 38596.8917012756. The cubic root of 1489720049 is about 1142.0932222292.

The spelling of 1489720049 in words is "one billion, four hundred eighty-nine million, seven hundred twenty thousand, forty-nine".