608388421 has 4 divisors (see below), whose sum is σ = 616957344. Its totient is φ = 599819500.

The previous prime is 608388383. The next prime is 608388427. The reversal of 608388421 is 124883806.

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 608388421 - 2¹³ = 608380229 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 (608388427) 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, 4284355 + ... + 4284496.

It is an arithmetic number, because the mean of its divisors is an integer number (154239336).

Almost surely, 2^608388421 is an apocalyptic number.

It is an amenable number.

608388421 is a deficient number, since it is larger than the sum of its proper divisors (8568923).

608388421 is an equidigital number, since it uses as much as digits as its factorization.

608388421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8568922.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 608388421 is about 24665.5310301643. The cubic root of 608388421 is about 847.3450822669.

The spelling of 608388421 in words is "six hundred eight million, three hundred eighty-eight thousand, four hundred twenty-one".