544689421 has 4 divisors (see below), whose sum is σ = 544809472. Its totient is φ = 544569372.

The previous prime is 544689419. The next prime is 544689433. The reversal of 544689421 is 124986445.

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 a cyclic number.

It is not a de Polignac number, because 544689421 - 2¹ = 544689419 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 (544689461) 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, 52941 + ... + 62386.

It is an arithmetic number, because the mean of its divisors is an integer number (136202368).

Almost surely, 2^544689421 is an apocalyptic number.

It is an amenable number.

544689421 is a deficient number, since it is larger than the sum of its proper divisors (120051).

544689421 is a wasteful number, since it uses less digits than its factorization.

544689421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120050.

The product of its digits is 276480, while the sum is 43.

The square root of 544689421 is about 23338.5822405732. The cubic root of 544689421 is about 816.6757251436.

The spelling of 544689421 in words is "five hundred forty-four million, six hundred eighty-nine thousand, four hundred twenty-one".