146889999 has 12 divisors (see below), whose sum is σ = 215771400. Its totient is φ = 96266544.

The previous prime is 146889973. The next prime is 146890019. The reversal of 146889999 is 999988641.

146889999 is a `hidden beast` number, since 1 + 468 + 89 + 9 + 99 = 666.

It is not a de Polignac number, because 146889999 - 2¹⁹ = 146365711 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146889199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137784 + ... + 138845.

It is an arithmetic number, because the mean of its divisors is an integer number (17980950).

Almost surely, 2^146889999 is an apocalyptic number.

146889999 is a deficient number, since it is larger than the sum of its proper divisors (68881401).

146889999 is a wasteful number, since it uses less digits than its factorization.

146889999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276694 (or 276691 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 146889999 is about 12119.8184392341. The cubic root of 146889999 is about 527.6315331269.

The spelling of 146889999 in words is "one hundred forty-six million, eight hundred eighty-nine thousand, nine hundred ninety-nine".