398629 has 16 divisors (see below), whose sum is σ = 516096. Its totient is φ = 298800.

The previous prime is 398627. The next prime is 398669. The reversal of 398629 is 926893.

It is a cyclic number.

It is not a de Polignac number, because 398629 - 2¹ = 398627 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 9² + 6⁷ + 8³ + 2 + 9⁵ .

Its product of digits (23328) is a multiple of the sum of its prime divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2304 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (32256).

2³⁹⁸⁶²⁹ is an apocalyptic number.

It is an amenable number.

398629 is a deficient number, since it is larger than the sum of its proper divisors (117467).

398629 is a wasteful number, since it uses less digits than its factorization.

398629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its digits is 23328, while the sum is 37.

The square root of 398629 is about 631.3707310289. The cubic root of 398629 is about 73.5963534937.

It can be divided in two parts, 39 and 8629, that added together give a palindrome (8668).

The spelling of 398629 in words is "three hundred ninety-eight thousand, six hundred twenty-nine".