398302 has 4 divisors (see below), whose sum is σ = 597456. Its totient is φ = 199150.

The previous prime is 398287. The next prime is 398303. The reversal of 398302 is 203893.

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: 203893 = 41 ⋅4973.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398303) by changing a digit.

398302 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99574 + ... + 99577.

It is an arithmetic number, because the mean of its divisors is an integer number (149364).

2³⁹⁸³⁰² is an apocalyptic number.

398302 is a deficient number, since it is larger than the sum of its proper divisors (199154).

398302 is a wasteful number, since it uses less digits than its factorization.

398302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199153.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 398302 is about 631.1117175271. Note that the first 3 decimals coincide. The cubic root of 398302 is about 73.5762240073.

The spelling of 398302 in words is "three hundred ninety-eight thousand, three hundred two".