398733 has 4 divisors (see below), whose sum is σ = 531648. Its totient is φ = 265820.

The previous prime is 398731. The next prime is 398759. The reversal of 398733 is 337893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398733 - 2¹ = 398731 is a prime.

It is a D-number.

398733 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 398694 and 398703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398731) 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, 66453 + ... + 66458.

It is an arithmetic number, because the mean of its divisors is an integer number (132912).

2³⁹⁸⁷³³ is an apocalyptic number.

It is an amenable number.

398733 is a deficient number, since it is larger than the sum of its proper divisors (132915).

398733 is a wasteful number, since it uses less digits than its factorization.

398733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132914.

The product of its digits is 13608, while the sum is 33.

The square root of 398733 is about 631.4530861434. The cubic root of 398733 is about 73.6027532248.

The spelling of 398733 in words is "three hundred ninety-eight thousand, seven hundred thirty-three".