1289472353 has 12 divisors (see below), whose sum is σ = 1403828244. Its totient is φ = 1177308000.

The previous prime is 1289472341. The next prime is 1289472361. The reversal of 1289472353 is 3532749821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 769951504 + 519520849 = 27748^2 + 22793^2 .

It is not a de Polignac number, because 1289472353 - 2⁸ = 1289472097 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1289472383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1300688 + ... + 1301678.

It is an arithmetic number, because the mean of its divisors is an integer number (116985687).

Almost surely, 2^1289472353 is an apocalyptic number.

1289472353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1289472353 is a deficient number, since it is larger than the sum of its proper divisors (114355891).

1289472353 is an frugal number, since it uses more digits than its factorization.

1289472353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 1105 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 1289472353 is about 35909.2237872110. The cubic root of 1289472353 is about 1088.4387920783.

The spelling of 1289472353 in words is "one billion, two hundred eighty-nine million, four hundred seventy-two thousand, three hundred fifty-three".