499723841 has 4 divisors (see below), whose sum is σ = 499936452. Its totient is φ = 499511232.

The previous prime is 499723837. The next prime is 499723843. The reversal of 499723841 is 148327994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333829441 + 165894400 = 18271^2 + 12880^2 .

It is a cyclic number.

It is not a de Polignac number, because 499723841 - 2² = 499723837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499723843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102740 + ... + 107493.

It is an arithmetic number, because the mean of its divisors is an integer number (124984113).

Almost surely, 2^499723841 is an apocalyptic number.

It is an amenable number.

499723841 is a deficient number, since it is larger than the sum of its proper divisors (212611).

499723841 is a wasteful number, since it uses less digits than its factorization.

499723841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212610.

The product of its digits is 435456, while the sum is 47.

The square root of 499723841 is about 22354.5038191412. The cubic root of 499723841 is about 793.5543740443.

The spelling of 499723841 in words is "four hundred ninety-nine million, seven hundred twenty-three thousand, eight hundred forty-one".