499653389 has 2 divisors, whose sum is σ = 499653390. Its totient is φ = 499653388.

The previous prime is 499653373. The next prime is 499653461. The reversal of 499653389 is 983356994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323640100 + 176013289 = 17990^2 + 13267^2 .

It is a cyclic number.

It is not a de Polignac number, because 499653389 - 2⁴ = 499653373 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499653289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249826694 + 249826695.

It is an arithmetic number, because the mean of its divisors is an integer number (249826695).

Almost surely, 2^499653389 is an apocalyptic number.

It is an amenable number.

499653389 is a deficient number, since it is larger than the sum of its proper divisors (1).

499653389 is an equidigital number, since it uses as much as digits as its factorization.

499653389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The square root of 499653389 is about 22352.9279737577. The cubic root of 499653389 is about 793.5170800326.

It can be divided in two parts, 4996 and 53389, that added together give a palindrome (58385).

The spelling of 499653389 in words is "four hundred ninety-nine million, six hundred fifty-three thousand, three hundred eighty-nine".