289990992 has 80 divisors (see below), whose sum is σ = 786342528. Its totient is φ = 91914240.

The previous prime is 289990979. The next prime is 289990993. The reversal of 289990992 is 299099982.

It is a super-2 number, since 2×289990992² = 168189550882288128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289990993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212392 + ... + 213752.

Almost surely, 2^289990992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289990992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393171264).

289990992 is an abundant number, since it is smaller than the sum of its proper divisors (496351536).

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

289990992 is a wasteful number, since it uses less digits than its factorization.

289990992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1582 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 289990992 is about 17029.1218798856. The cubic root of 289990992 is about 661.9037412941.

The spelling of 289990992 in words is "two hundred eighty-nine million, nine hundred ninety thousand, nine hundred ninety-two".