289408146 has 16 divisors (see below), whose sum is σ = 592277664. Its totient is φ = 94225824.

The previous prime is 289408129. The next prime is 289408177. The reversal of 289408146 is 641804982.

It is a junction number, because it is equal to n+sod(n) for n = 289408098 and 289408107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560611 + ... + 561126.

It is an arithmetic number, because the mean of its divisors is an integer number (37017354).

Almost surely, 2^289408146 is an apocalyptic number.

289408146 is an abundant number, since it is smaller than the sum of its proper divisors (302869518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289408146 is a wasteful number, since it uses less digits than its factorization.

289408146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121785.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 289408146 is about 17012.0000587820. Note that the first 4 decimals coincide. The cubic root of 289408146 is about 661.4599956726.

The spelling of 289408146 in words is "two hundred eighty-nine million, four hundred eight thousand, one hundred forty-six".