499974149 has 2 divisors, whose sum is σ = 499974150. Its totient is φ = 499974148.

The previous prime is 499974121. The next prime is 499974187. The reversal of 499974149 is 941479994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466992100 + 32982049 = 21610^2 + 5743^2 .

It is a cyclic number.

It is not a de Polignac number, because 499974149 - 2²⁰ = 498925573 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 499974094 and 499974103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499974649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249987074 + 249987075.

It is an arithmetic number, because the mean of its divisors is an integer number (249987075).

Almost surely, 2^499974149 is an apocalyptic number.

It is an amenable number.

499974149 is a deficient number, since it is larger than the sum of its proper divisors (1).

499974149 is an equidigital number, since it uses as much as digits as its factorization.

499974149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 56.

The square root of 499974149 is about 22360.1017215933. The cubic root of 499974149 is about 793.6868471135.

The spelling of 499974149 in words is "four hundred ninety-nine million, nine hundred seventy-four thousand, one hundred forty-nine".