1200404889 has 24 divisors (see below), whose sum is σ = 1750993920. Its totient is φ = 792415008.

The previous prime is 1200404873. The next prime is 1200404903. The reversal of 1200404889 is 9884040021.

It is not a de Polignac number, because 1200404889 - 2⁴ = 1200404873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200404869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1081867 + ... + 1082975.

It is an arithmetic number, because the mean of its divisors is an integer number (72958080).

Almost surely, 2^1200404889 is an apocalyptic number.

It is an amenable number.

1200404889 is a deficient number, since it is larger than the sum of its proper divisors (550589031).

1200404889 is a wasteful number, since it uses less digits than its factorization.

1200404889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1200404889 is about 34646.8597278310. The cubic root of 1200404889 is about 1062.7780720670.

The spelling of 1200404889 in words is "one billion, two hundred million, four hundred four thousand, eight hundred eighty-nine".