289354421 has 4 divisors (see below), whose sum is σ = 301935072. Its totient is φ = 276773772.

The previous prime is 289354409. The next prime is 289354427. The reversal of 289354421 is 124453982.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124453982 = 2 ⋅62226991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289354421 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 (289354427) 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, 6290291 + ... + 6290336.

It is an arithmetic number, because the mean of its divisors is an integer number (75483768).

Almost surely, 2^289354421 is an apocalyptic number.

It is an amenable number.

289354421 is a deficient number, since it is larger than the sum of its proper divisors (12580651).

289354421 is a wasteful number, since it uses less digits than its factorization.

289354421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580650.

The product of its digits is 69120, while the sum is 38.

The square root of 289354421 is about 17010.4209530511. The cubic root of 289354421 is about 661.4190625498.

The spelling of 289354421 in words is "two hundred eighty-nine million, three hundred fifty-four thousand, four hundred twenty-one".