289980442 has 8 divisors (see below), whose sum is σ = 435435732. Its totient is φ = 144835200.

The previous prime is 289980419. The next prime is 289980461. The reversal of 289980442 is 244089982.

It can be written as a sum of positive squares in 2 ways, for example, as 283215241 + 6765201 = 16829^2 + 2601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×289980442³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289980392 and 289980401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75159 + ... + 78922.

Almost surely, 2^289980442 is an apocalyptic number.

289980442 is a deficient number, since it is larger than the sum of its proper divisors (145455290).

289980442 is a wasteful number, since it uses less digits than its factorization.

289980442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155024.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 289980442 is about 17028.8121135915. The cubic root of 289980442 is about 661.8957144136.

The spelling of 289980442 in words is "two hundred eighty-nine million, nine hundred eighty thousand, four hundred forty-two".