499209605 has 8 divisors (see below), whose sum is σ = 599314464. Its totient is φ = 399192400.

The previous prime is 499209541. The next prime is 499209617. The reversal of 499209605 is 506902994.

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

It is not a de Polignac number, because 499209605 - 2⁶ = 499209541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8651 + ... + 32760.

It is an arithmetic number, because the mean of its divisors is an integer number (74914308).

Almost surely, 2^499209605 is an apocalyptic number.

It is an amenable number.

499209605 is a deficient number, since it is larger than the sum of its proper divisors (100104859).

499209605 is a wasteful number, since it uses less digits than its factorization.

499209605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43827.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 499209605 is about 22342.9990153515. Note that the first 3 decimals coincide. The cubic root of 499209605 is about 793.2820807971.

Adding to 499209605 its sum of digits (44), we get a square (499209649 = 22343²).

The spelling of 499209605 in words is "four hundred ninety-nine million, two hundred nine thousand, six hundred five".