1466869889 has 4 divisors (see below), whose sum is σ = 1467335940. Its totient is φ = 1466403840.

The previous prime is 1466869849. The next prime is 1466869897. The reversal of 1466869889 is 9889686641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1143589489 + 323280400 = 33817^2 + 17980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1466869889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1466869829) 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, 228272 + ... + 234609.

It is an arithmetic number, because the mean of its divisors is an integer number (366833985).

Almost surely, 2^1466869889 is an apocalyptic number.

It is an amenable number.

1466869889 is a deficient number, since it is larger than the sum of its proper divisors (466051).

1466869889 is an equidigital number, since it uses as much as digits as its factorization.

1466869889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466050.

The product of its digits is 35831808, while the sum is 65.

The square root of 1466869889 is about 38299.7374534082. The cubic root of 1466869889 is about 1136.2237543714.

The spelling of 1466869889 in words is "one billion, four hundred sixty-six million, eight hundred sixty-nine thousand, eight hundred eighty-nine".