499378357 has 4 divisors (see below), whose sum is σ = 499880236. Its totient is φ = 498876480.

The previous prime is 499378343. The next prime is 499378367. The reversal of 499378357 is 753873994.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753873994 = 2 ⋅376936997.

It can be written as a sum of positive squares in 2 ways, for example, as 326561041 + 172817316 = 18071^2 + 13146^2 .

It is a cyclic number.

It is not a de Polignac number, because 499378357 - 2¹⁵ = 499345589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499378298 and 499378307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499378367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249444 + ... + 251437.

It is an arithmetic number, because the mean of its divisors is an integer number (124970059).

Almost surely, 2^499378357 is an apocalyptic number.

It is an amenable number.

499378357 is a deficient number, since it is larger than the sum of its proper divisors (501879).

499378357 is an equidigital number, since it uses as much as digits as its factorization.

499378357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501878.

The product of its digits is 5715360, while the sum is 55.

The square root of 499378357 is about 22346.7750917218. The cubic root of 499378357 is about 793.3714573202.

The spelling of 499378357 in words is "four hundred ninety-nine million, three hundred seventy-eight thousand, three hundred fifty-seven".