398630 has 8 divisors (see below), whose sum is σ = 717552. Its totient is φ = 159448.

The previous prime is 398627. The next prime is 398669. The reversal of 398630 is 36893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 398593 and 398602.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398630.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19922 + ... + 19941.

It is an arithmetic number, because the mean of its divisors is an integer number (89694).

2³⁹⁸⁶³⁰ is an apocalyptic number.

398630 is a deficient number, since it is larger than the sum of its proper divisors (318922).

398630 is a wasteful number, since it uses less digits than its factorization.

398630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39870.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 398630 is about 631.3715229562. The cubic root of 398630 is about 73.5964150349.

The spelling of 398630 in words is "three hundred ninety-eight thousand, six hundred thirty".