398698 has 8 divisors (see below), whose sum is σ = 602208. Its totient is φ = 197964.

The previous prime is 398693. The next prime is 398711. The reversal of 398698 is 896893.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (398693) 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, 286 + ... + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (75276).

2³⁹⁸⁶⁹⁸ is an apocalyptic number.

398698 is a deficient number, since it is larger than the sum of its proper divisors (203510).

398698 is a wasteful number, since it uses less digits than its factorization.

398698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its digits is 93312, while the sum is 43.

The square root of 398698 is about 631.4253716790. The cubic root of 398698 is about 73.6005995934.

The spelling of 398698 in words is "three hundred ninety-eight thousand, six hundred ninety-eight".