398281113 has 12 divisors (see below), whose sum is σ = 577767060. Its totient is φ = 264379776.

The previous prime is 398281111. The next prime is 398281123. The reversal of 398281113 is 311182893.

It can be written as a sum of positive squares in 2 ways, for example, as 131056704 + 267224409 = 11448^2 + 16347^2 .

It is not a de Polignac number, because 398281113 - 2¹ = 398281111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398281111) 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 11 ways as a sum of consecutive naturals, for example, 92868 + ... + 97061.

It is an arithmetic number, because the mean of its divisors is an integer number (48147255).

Almost surely, 2^398281113 is an apocalyptic number.

It is an amenable number.

398281113 is a deficient number, since it is larger than the sum of its proper divisors (179485947).

398281113 is a wasteful number, since it uses less digits than its factorization.

398281113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190168 (or 190165 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 398281113 is about 19956.9815603462. The cubic root of 398281113 is about 735.7493786976.

The spelling of 398281113 in words is "three hundred ninety-eight million, two hundred eighty-one thousand, one hundred thirteen".