398318361 has 8 divisors (see below), whose sum is σ = 606961344. Its totient is φ = 227610480.

The previous prime is 398318359. The next prime is 398318377. The reversal of 398318361 is 163813893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 398318361 - 2¹ = 398318359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398318351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9483750 + ... + 9483791.

It is an arithmetic number, because the mean of its divisors is an integer number (75870168).

Almost surely, 2^398318361 is an apocalyptic number.

It is an amenable number.

398318361 is a deficient number, since it is larger than the sum of its proper divisors (208642983).

398318361 is a wasteful number, since it uses less digits than its factorization.

398318361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18967551.

The product of its digits is 93312, while the sum is 42.

The square root of 398318361 is about 19957.9147457844. The cubic root of 398318361 is about 735.7723142053.

The spelling of 398318361 in words is "three hundred ninety-eight million, three hundred eighteen thousand, three hundred sixty-one".