1489455447 has 4 divisors (see below), whose sum is σ = 1985940600. Its totient is φ = 992970296.

The previous prime is 1489455431. The next prime is 1489455463. The reversal of 1489455447 is 7445549841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7445549841 = 3 ⋅2481849947.

It is an interprime number because it is at equal distance from previous prime (1489455431) and next prime (1489455463).

It is a cyclic number.

It is not a de Polignac number, because 1489455447 - 2⁴ = 1489455431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1489455447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489455497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248242572 + ... + 248242577.

It is an arithmetic number, because the mean of its divisors is an integer number (496485150).

Almost surely, 2^1489455447 is an apocalyptic number.

1489455447 is a deficient number, since it is larger than the sum of its proper divisors (496485153).

1489455447 is an equidigital number, since it uses as much as digits as its factorization.

1489455447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496485152.

The product of its digits is 3225600, while the sum is 51.

The square root of 1489455447 is about 38593.4637859832. The cubic root of 1489455447 is about 1142.0255992229.

The spelling of 1489455447 in words is "one billion, four hundred eighty-nine million, four hundred fifty-five thousand, four hundred forty-seven".