499974143 has 4 divisors (see below), whose sum is σ = 505591920. Its totient is φ = 494356368.

The previous prime is 499974121. The next prime is 499974149. The reversal of 499974143 is 341479994.

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

It is a cyclic number.

It is not a de Polignac number, because 499974143 - 2²² = 495779839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499974091 and 499974100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499974149) 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, 2808755 + ... + 2808932.

It is an arithmetic number, because the mean of its divisors is an integer number (126397980).

Almost surely, 2^499974143 is an apocalyptic number.

499974143 is a deficient number, since it is larger than the sum of its proper divisors (5617777).

499974143 is an equidigital number, since it uses as much as digits as its factorization.

499974143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617776.

The product of its digits is 979776, while the sum is 50.

The square root of 499974143 is about 22360.1015874258. The cubic root of 499974143 is about 793.6868439386.

The spelling of 499974143 in words is "four hundred ninety-nine million, nine hundred seventy-four thousand, one hundred forty-three".