289670842 has 4 divisors (see below), whose sum is σ = 434506266. Its totient is φ = 144835420.

The previous prime is 289670839. The next prime is 289670861. The reversal of 289670842 is 248076982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 189090001 + 100580841 = 13751^2 + 10029^2 .

It is a super-3 number, since 3×289670842³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289670792 and 289670801.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 72417709 + ... + 72417712.

Almost surely, 2^289670842 is an apocalyptic number.

289670842 is a deficient number, since it is larger than the sum of its proper divisors (144835424).

289670842 is a wasteful number, since it uses less digits than its factorization.

289670842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144835423.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 289670842 is about 17019.7192103748. The cubic root of 289670842 is about 661.6600710667.

The spelling of 289670842 in words is "two hundred eighty-nine million, six hundred seventy thousand, eight hundred forty-two".