499842861 has 16 divisors (see below), whose sum is σ = 801753600. Its totient is φ = 270591408.

The previous prime is 499842821. The next prime is 499842881. The reversal of 499842861 is 168248994.

It is not a de Polignac number, because 499842861 - 2¹⁵ = 499810093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499842821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625971 + ... + 626768.

It is an arithmetic number, because the mean of its divisors is an integer number (50109600).

Almost surely, 2^499842861 is an apocalyptic number.

It is an amenable number.

499842861 is a deficient number, since it is larger than the sum of its proper divisors (301910739).

499842861 is a wasteful number, since it uses less digits than its factorization.

499842861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252768.

The product of its digits is 995328, while the sum is 51.

The square root of 499842861 is about 22357.1657640230. The cubic root of 499842861 is about 793.6173697341.

The spelling of 499842861 in words is "four hundred ninety-nine million, eight hundred forty-two thousand, eight hundred sixty-one".