289983402 has 80 divisors (see below), whose sum is σ = 683020800. Its totient is φ = 91780128.

The previous prime is 289983349. The next prime is 289983413. The reversal of 289983402 is 204389982.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 830724 + ... + 831072.

It is an arithmetic number, because the mean of its divisors is an integer number (8537760).

Almost surely, 2^289983402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289983402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341510400).

289983402 is an abundant number, since it is smaller than the sum of its proper divisors (393037398).

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

289983402 is a wasteful number, since it uses less digits than its factorization.

289983402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 289983402 is about 17028.8990248929. The cubic root of 289983402 is about 661.8979665249.

It can be divided in two parts, 28998 and 3402, that added together give a square (32400 = 180²).

The spelling of 289983402 in words is "two hundred eighty-nine million, nine hundred eighty-three thousand, four hundred two".