398534 has 4 divisors (see below), whose sum is σ = 597804. Its totient is φ = 199266.

The previous prime is 398509. The next prime is 398539. The reversal of 398534 is 435893.

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

It is a self number, because there is not a number n which added to its sum of digits gives 398534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398539) by changing a digit.

398534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99632 + ... + 99635.

It is an arithmetic number, because the mean of its divisors is an integer number (149451).

2³⁹⁸⁵³⁴ is an apocalyptic number.

398534 is a deficient number, since it is larger than the sum of its proper divisors (199270).

398534 is a wasteful number, since it uses less digits than its factorization.

398534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199269.

The product of its digits is 12960, while the sum is 32.

The square root of 398534 is about 631.2954934102. The cubic root of 398534 is about 73.5905066127.

The spelling of 398534 in words is "three hundred ninety-eight thousand, five hundred thirty-four".