398914 has 4 divisors (see below), whose sum is σ = 598374. Its totient is φ = 199456.

The previous prime is 398903. The next prime is 398917. The reversal of 398914 is 419893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 18225 = 617^2 + 135^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 398914.

It is not an unprimeable number, because it can be changed into a prime (398917) by changing a digit.

398914 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99727 + ... + 99730.

2³⁹⁸⁹¹⁴ is an apocalyptic number.

398914 is a deficient number, since it is larger than the sum of its proper divisors (199460).

398914 is a wasteful number, since it uses less digits than its factorization.

398914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199459.

The product of its digits is 7776, while the sum is 34.

The square root of 398914 is about 631.5963901100. The cubic root of 398914 is about 73.6138885652.

The spelling of 398914 in words is "three hundred ninety-eight thousand, nine hundred fourteen".