1200000089 has 8 divisors (see below), whose sum is σ = 1216192512. Its totient is φ = 1183892400.

The previous prime is 1200000079. The next prime is 1200000101. The reversal of 1200000089 is 9800000021.

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 1200000089 - 2⁴ = 1200000073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200000089.

It is not an unprimeable number, because it can be changed into a prime (1200000059) 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, 7592 + ... + 49574.

It is an arithmetic number, because the mean of its divisors is an integer number (152024064).

Almost surely, 2^1200000089 is an apocalyptic number.

It is an amenable number.

1200000089 is a deficient number, since it is larger than the sum of its proper divisors (16192423).

1200000089 is a wasteful number, since it uses less digits than its factorization.

1200000089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42367.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1200000089 is about 34641.0174359819. The cubic root of 1200000089 is about 1062.6585954539.

The spelling of 1200000089 in words is "one billion, two hundred million, eighty-nine", and thus it is an aban number.