289909982 has 4 divisors (see below), whose sum is σ = 434864976. Its totient is φ = 144954990.

The previous prime is 289909957. The next prime is 289909987.

289909982 is nontrivially palindromic in base 10.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289909987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72477494 + ... + 72477497.

It is an arithmetic number, because the mean of its divisors is an integer number (108716244).

Almost surely, 2^289909982 is an apocalyptic number.

289909982 is a deficient number, since it is larger than the sum of its proper divisors (144954994).

289909982 is a wasteful number, since it uses less digits than its factorization.

289909982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144954993.

The product of its (nonzero) digits is 1679616, while the sum is 56.

The square root of 289909982 is about 17026.7431413057. The cubic root of 289909982 is about 661.8421005106.

The spelling of 289909982 in words is "two hundred eighty-nine million, nine hundred nine thousand, nine hundred eighty-two".