145898289 has 12 divisors (see below), whose sum is σ = 216438196. Its totient is φ = 94636512.

The previous prime is 145898279. The next prime is 145898297. The reversal of 145898289 is 982898541.

It can be written as a sum of positive squares in 2 ways, for example, as 66830625 + 79067664 = 8175^2 + 8892^2 .

It is not a de Polignac number, because 145898289 - 2⁴ = 145898273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145898279) 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, 218734 + ... + 219399.

Almost surely, 2^145898289 is an apocalyptic number.

It is an amenable number.

145898289 is a deficient number, since it is larger than the sum of its proper divisors (70539907).

145898289 is a wasteful number, since it uses less digits than its factorization.

145898289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438176 (or 438173 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 145898289 is about 12078.8364091911. The cubic root of 145898289 is about 526.4414374140.

The spelling of 145898289 in words is "one hundred forty-five million, eight hundred ninety-eight thousand, two hundred eighty-nine".