1289046961 has 8 divisors (see below), whose sum is σ = 1308610944. Its totient is φ = 1269522240.

The previous prime is 1289046931. The next prime is 1289047003. The reversal of 1289046961 is 1696409821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1289046961 - 2¹³ = 1289038769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1289046931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60076 + ... + 78658.

It is an arithmetic number, because the mean of its divisors is an integer number (163576368).

Almost surely, 2^1289046961 is an apocalyptic number.

It is an amenable number.

1289046961 is a deficient number, since it is larger than the sum of its proper divisors (19563983).

1289046961 is an equidigital number, since it uses as much as digits as its factorization.

1289046961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1289046961 is about 35903.3001407949. The cubic root of 1289046961 is about 1088.3190883152.

The spelling of 1289046961 in words is "one billion, two hundred eighty-nine million, forty-six thousand, nine hundred sixty-one".