609939420 has 48 divisors (see below), whose sum is σ = 1713374208. Its totient is φ = 162122560.

The previous prime is 609939409. The next prime is 609939431. The reversal of 609939420 is 24939906.

It is an interprime number because it is at equal distance from previous prime (609939409) and next prime (609939431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2317 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (35695296).

Almost surely, 2^609939420 is an apocalyptic number.

609939420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609939420 is an abundant number, since it is smaller than the sum of its proper divisors (1103434788).

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

609939420 is a wasteful number, since it uses less digits than its factorization.

609939420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33010 (or 33008 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 609939420 is about 24696.9516337543. The cubic root of 609939420 is about 848.0645328099.

The spelling of 609939420 in words is "six hundred nine million, nine hundred thirty-nine thousand, four hundred twenty".