398963 has 4 divisors (see below), whose sum is σ = 401520. Its totient is φ = 396408.

The previous prime is 398941. The next prime is 398969. The reversal of 398963 is 369893.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 398963 - 2¹⁰ = 397939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028 + ... + 1361.

It is an arithmetic number, because the mean of its divisors is an integer number (100380).

2³⁹⁸⁹⁶³ is an apocalyptic number.

398963 is a deficient number, since it is larger than the sum of its proper divisors (2557).

398963 is a wasteful number, since it uses less digits than its factorization.

398963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556.

The product of its digits is 34992, while the sum is 38.

The square root of 398963 is about 631.6351795143. The cubic root of 398963 is about 73.6169025255.

The spelling of 398963 in words is "three hundred ninety-eight thousand, nine hundred sixty-three".