1146998889 has 12 divisors (see below), whose sum is σ = 1666942576. Its totient is φ = 759973752.

The previous prime is 1146998863. The next prime is 1146998893. The reversal of 1146998889 is 9888996411.

1146998889 is a `hidden beast` number, since 1 + 1 + 469 + 98 + 8 + 89 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1146998889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146998989) 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, 389467 + ... + 392400.

Almost surely, 2^1146998889 is an apocalyptic number.

It is an amenable number.

1146998889 is a deficient number, since it is larger than the sum of its proper divisors (519943687).

1146998889 is a wasteful number, since it uses less digits than its factorization.

1146998889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782036 (or 782033 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 63.

The square root of 1146998889 is about 33867.3720415387. The cubic root of 1146998889 is about 1046.7773874491. Note that the first 3 decimals are identical.

The spelling of 1146998889 in words is "one billion, one hundred forty-six million, nine hundred ninety-eight thousand, eight hundred eighty-nine".