609387421 has 4 divisors (see below), whose sum is σ = 612792000. Its totient is φ = 605982844.

The previous prime is 609387413. The next prime is 609387433. The reversal of 609387421 is 124783906.

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 609387421 - 2³ = 609387413 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 (609387221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702021 + ... + 1702378.

It is an arithmetic number, because the mean of its divisors is an integer number (153198000).

Almost surely, 2^609387421 is an apocalyptic number.

It is an amenable number.

609387421 is a deficient number, since it is larger than the sum of its proper divisors (3404579).

609387421 is a wasteful number, since it uses less digits than its factorization.

609387421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404578.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 609387421 is about 24685.7736560959. The cubic root of 609387421 is about 847.8086210204.

The spelling of 609387421 in words is "six hundred nine million, three hundred eighty-seven thousand, four hundred twenty-one".