146890289 has 12 divisors (see below), whose sum is σ = 184017204. Its totient is φ = 116220384.

The previous prime is 146890243. The next prime is 146890297. The reversal of 146890289 is 982098641.

It can be written as a sum of positive squares in 2 ways, for example, as 91833889 + 55056400 = 9583^2 + 7420^2 .

It is not a de Polignac number, because 146890289 - 2⁸ = 146890033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146890789) 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, 114662 + ... + 115935.

It is an arithmetic number, because the mean of its divisors is an integer number (15334767).

Almost surely, 2^146890289 is an apocalyptic number.

It is an amenable number.

146890289 is a deficient number, since it is larger than the sum of its proper divisors (37126915).

146890289 is a wasteful number, since it uses less digits than its factorization.

146890289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230624 (or 230617 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 146890289 is about 12119.8304031038. The cubic root of 146890289 is about 527.6318803551.

The spelling of 146890289 in words is "one hundred forty-six million, eight hundred ninety thousand, two hundred eighty-nine".