499139293 has 2 divisors, whose sum is σ = 499139294. Its totient is φ = 499139292.

The previous prime is 499139243. The next prime is 499139317. The reversal of 499139293 is 392931994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294019609 + 205119684 = 17147^2 + 14322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499139293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499139243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249569646 + 249569647.

It is an arithmetic number, because the mean of its divisors is an integer number (249569647).

Almost surely, 2^499139293 is an apocalyptic number.

It is an amenable number.

499139293 is a deficient number, since it is larger than the sum of its proper divisors (1).

499139293 is an equidigital number, since it uses as much as digits as its factorization.

499139293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 49.

The square root of 499139293 is about 22341.4254916735. The cubic root of 499139293 is about 793.2448353408.

The spelling of 499139293 in words is "four hundred ninety-nine million, one hundred thirty-nine thousand, two hundred ninety-three".