499428469 has 2 divisors, whose sum is σ = 499428470. Its totient is φ = 499428468.

The previous prime is 499428443. The next prime is 499428491. The reversal of 499428469 is 964824994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498986244 + 442225 = 22338^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 499428469 - 2¹⁷ = 499297397 is a prime.

It is a super-2 number, since 2×499428469² = 498857591295367922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499428409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249714234 + 249714235.

It is an arithmetic number, because the mean of its divisors is an integer number (249714235).

Almost surely, 2^499428469 is an apocalyptic number.

It is an amenable number.

499428469 is a deficient number, since it is larger than the sum of its proper divisors (1).

499428469 is an equidigital number, since it uses as much as digits as its factorization.

499428469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 55.

The square root of 499428469 is about 22347.8962992045. The cubic root of 499428469 is about 793.3979943805.

The spelling of 499428469 in words is "four hundred ninety-nine million, four hundred twenty-eight thousand, four hundred sixty-nine".