289740392 has 16 divisors (see below), whose sum is σ = 561996900. Its totient is φ = 139874560.

The previous prime is 289740391. The next prime is 289740403. The reversal of 289740392 is 293047982.

It can be written as a sum of positive squares in 2 ways, for example, as 289476196 + 264196 = 17014^2 + 514^2 .

It is not an unprimeable number, because it can be changed into a prime (289740391) 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 3 ways as a sum of consecutive naturals, for example, 624209 + ... + 624672.

Almost surely, 2^289740392 is an apocalyptic number.

It is an amenable number.

289740392 is a deficient number, since it is larger than the sum of its proper divisors (272256508).

289740392 is a wasteful number, since it uses less digits than its factorization.

289740392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248916 (or 1248912 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 289740392 is about 17021.7623059424. The cubic root of 289740392 is about 661.7130217136.

The spelling of 289740392 in words is "two hundred eighty-nine million, seven hundred forty thousand, three hundred ninety-two".