499921279 has 8 divisors (see below), whose sum is σ = 587320272. Its totient is φ = 419514240.

The previous prime is 499921273. The next prime is 499921297. The reversal of 499921279 is 972129994.

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

It is a cyclic number.

It is not a de Polignac number, because 499921279 - 2⁷ = 499921151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499921273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1747834 + ... + 1748119.

It is an arithmetic number, because the mean of its divisors is an integer number (73415034).

Almost surely, 2^499921279 is an apocalyptic number.

499921279 is a deficient number, since it is larger than the sum of its proper divisors (87398993).

499921279 is a wasteful number, since it uses less digits than its factorization.

499921279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495977.

The product of its digits is 734832, while the sum is 52.

The square root of 499921279 is about 22358.9194506354. The cubic root of 499921279 is about 793.6588698651.

The spelling of 499921279 in words is "four hundred ninety-nine million, nine hundred twenty-one thousand, two hundred seventy-nine".