336728391949 has 4 divisors (see below), whose sum is σ = 336765254364. Its totient is φ = 336691529536.

The previous prime is 336728391907. The next prime is 336728391977. The reversal of 336728391949 is 949193827633.

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: 949193827633 = 123727 ⋅7671679.

It can be written as a sum of positive squares in 2 ways, for example, as 34495632900 + 302232759049 = 185730^2 + 549757^2 .

It is a cyclic number.

It is not a de Polignac number, because 336728391949 - 2⁹ = 336728391437 is a prime.

It is a super-2 number, since 2×336728391949² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (336728394949) 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, 18417502 + ... + 18435775.

It is an arithmetic number, because the mean of its divisors is an integer number (84191313591).

Almost surely, 2^336728391949 is an apocalyptic number.

It is an amenable number.

336728391949 is a deficient number, since it is larger than the sum of its proper divisors (36862415).

336728391949 is an equidigital number, since it uses as much as digits as its factorization.

336728391949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36862414.

The product of its digits is 52907904, while the sum is 64.

The spelling of 336728391949 in words is "three hundred thirty-six billion, seven hundred twenty-eight million, three hundred ninety-one thousand, nine hundred forty-nine".