609899397 has 8 divisors (see below), whose sum is σ = 813494880. Its totient is φ = 406451760.

The previous prime is 609899393. The next prime is 609899399. The reversal of 609899397 is 793998906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609899397 - 2² = 609899393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609899397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609899393) 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 7 ways as a sum of consecutive naturals, for example, 26947 + ... + 44112.

It is an arithmetic number, because the mean of its divisors is an integer number (101686860).

Almost surely, 2^609899397 is an apocalyptic number.

It is an amenable number.

609899397 is a deficient number, since it is larger than the sum of its proper divisors (203595483).

609899397 is a wasteful number, since it uses less digits than its factorization.

609899397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73923.

The product of its (nonzero) digits is 6613488, while the sum is 60.

The square root of 609899397 is about 24696.1413382739. The cubic root of 609899397 is about 848.0459829736.

The spelling of 609899397 in words is "six hundred nine million, eight hundred ninety-nine thousand, three hundred ninety-seven".