609839405 has 16 divisors (see below), whose sum is σ = 865192320. Its totient is φ = 403755072.

The previous prime is 609839393. The next prime is 609839423. The reversal of 609839405 is 504938906.

It is not a de Polignac number, because 609839405 - 2⁶ = 609839341 is a prime.

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, 299399 + ... + 301428.

It is an arithmetic number, because the mean of its divisors is an integer number (54074520).

Almost surely, 2^609839405 is an apocalyptic number.

It is an amenable number.

609839405 is a deficient number, since it is larger than the sum of its proper divisors (255352915).

609839405 is a wasteful number, since it uses less digits than its factorization.

609839405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600868.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 609839405 is about 24694.9267057021. The cubic root of 609839405 is about 848.0181763971.

The spelling of 609839405 in words is "six hundred nine million, eight hundred thirty-nine thousand, four hundred five".