273684989 has 4 divisors (see below), whose sum is σ = 289784124. Its totient is φ = 257585856.

The previous prime is 273684973. The next prime is 273685003. The reversal of 273684989 is 989486372.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 118483225 + 155201764 = 10885^2 + 12458^2 .

It is a cyclic number.

It is not a de Polignac number, because 273684989 - 2⁴ = 273684973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273684959) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8049542 + ... + 8049575.

It is an arithmetic number, because the mean of its divisors is an integer number (72446031).

Almost surely, 2^273684989 is an apocalyptic number.

It is an amenable number.

273684989 is a deficient number, since it is larger than the sum of its proper divisors (16099135).

273684989 is a wasteful number, since it uses less digits than its factorization.

273684989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16099134.

The product of its digits is 5225472, while the sum is 56.

The square root of 273684989 is about 16543.4273655733. The cubic root of 273684989 is about 649.2575261838.

The spelling of 273684989 in words is "two hundred seventy-three million, six hundred eighty-four thousand, nine hundred eighty-nine".