599421 has 4 divisors (see below), whose sum is σ = 799232. Its totient is φ = 399612.

The previous prime is 599419. The next prime is 599429. The reversal of 599421 is 124995.

It is a happy number.

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 599421 - 2¹ = 599419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (599429) 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, 99901 + ... + 99906.

It is an arithmetic number, because the mean of its divisors is an integer number (199808).

2⁵⁹⁹⁴²¹ is an apocalyptic number.

It is an amenable number.

599421 is a deficient number, since it is larger than the sum of its proper divisors (199811).

599421 is a wasteful number, since it uses less digits than its factorization.

599421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199810.

The product of its digits is 3240, while the sum is 30.

The square root of 599421 is about 774.2228361396. Note that the first 3 decimals coincide. The cubic root of 599421 is about 84.3161273811.

The spelling of 599421 in words is "five hundred ninety-nine thousand, four hundred twenty-one".