609441420 has 72 divisors (see below), whose sum is σ = 1985047344. Its totient is φ = 139300224.

The previous prime is 609441389. The next prime is 609441457. The reversal of 609441420 is 24144906.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 100707 + ... + 106586.

It is an arithmetic number, because the mean of its divisors is an integer number (27570102).

Almost surely, 2^609441420 is an apocalyptic number.

609441420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609441420 is an abundant number, since it is smaller than the sum of its proper divisors (1375605924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609441420 is a wasteful number, since it uses less digits than its factorization.

609441420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207319 (or 207310 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 609441420 is about 24686.8673589826. The cubic root of 609441420 is about 847.8336622689.

The spelling of 609441420 in words is "six hundred nine million, four hundred forty-one thousand, four hundred twenty".