1289416449 has 16 divisors (see below), whose sum is σ = 1775797760. Its totient is φ = 831358080.

The previous prime is 1289416423. The next prime is 1289416451. The reversal of 1289416449 is 9446149821.

It is not a de Polignac number, because 1289416449 - 2⁹ = 1289415937 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1289416398 and 1289416407.

It is not an unprimeable number, because it can be changed into a prime (1289416049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190959 + ... + 197595.

It is an arithmetic number, because the mean of its divisors is an integer number (110987360).

Almost surely, 2^1289416449 is an apocalyptic number.

It is an amenable number.

1289416449 is a deficient number, since it is larger than the sum of its proper divisors (486381311).

1289416449 is a wasteful number, since it uses less digits than its factorization.

1289416449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760.

The product of its digits is 497664, while the sum is 48.

The square root of 1289416449 is about 35908.4453715279. The cubic root of 1289416449 is about 1088.4230623985.

The spelling of 1289416449 in words is "one billion, two hundred eighty-nine million, four hundred sixteen thousand, four hundred forty-nine".