499389557 has 2 divisors, whose sum is σ = 499389558. Its totient is φ = 499389556.

The previous prime is 499389497. The next prime is 499389563. The reversal of 499389557 is 755983994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405861316 + 93528241 = 20146^2 + 9671^2 .

It is a cyclic number.

It is not a de Polignac number, because 499389557 - 2⁸ = 499389301 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 499389496 and 499389505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499389577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249694778 + 249694779.

It is an arithmetic number, because the mean of its divisors is an integer number (249694779).

Almost surely, 2^499389557 is an apocalyptic number.

It is an amenable number.

499389557 is a deficient number, since it is larger than the sum of its proper divisors (1).

499389557 is an equidigital number, since it uses as much as digits as its factorization.

499389557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 59.

The square root of 499389557 is about 22347.0256857596. The cubic root of 499389557 is about 793.3773884903.

It can be divided in two parts, 49938 and 9557, that added together give a palindrome (59495).

The spelling of 499389557 in words is "four hundred ninety-nine million, three hundred eighty-nine thousand, five hundred fifty-seven".