289978396 has 24 divisors (see below), whose sum is σ = 514033520. Its totient is φ = 143119872.

The previous prime is 289978393. The next prime is 289978417. The reversal of 289978396 is 693879982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289978393) 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 7 ways as a sum of consecutive naturals, for example, 202210 + ... + 203638.

Almost surely, 2^289978396 is an apocalyptic number.

It is an amenable number.

289978396 is a deficient number, since it is larger than the sum of its proper divisors (224055124).

289978396 is a wasteful number, since it uses less digits than its factorization.

289978396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2051 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The square root of 289978396 is about 17028.7520388313. The cubic root of 289978396 is about 661.8941577088.

The spelling of 289978396 in words is "two hundred eighty-nine million, nine hundred seventy-eight thousand, three hundred ninety-six".