289021413 has 4 divisors (see below), whose sum is σ = 385361888. Its totient is φ = 192680940.

The previous prime is 289021379. The next prime is 289021433. The reversal of 289021413 is 314120982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 289021413 - 2²⁴ = 272244197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289021433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48170233 + ... + 48170238.

It is an arithmetic number, because the mean of its divisors is an integer number (96340472).

Almost surely, 2^289021413 is an apocalyptic number.

It is an amenable number.

289021413 is a deficient number, since it is larger than the sum of its proper divisors (96340475).

289021413 is an equidigital number, since it uses as much as digits as its factorization.

289021413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96340474.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 289021413 is about 17000.6297824522. The cubic root of 289021413 is about 661.1652303715.

The spelling of 289021413 in words is "two hundred eighty-nine million, twenty-one thousand, four hundred thirteen".