398154 has 8 divisors (see below), whose sum is σ = 796320. Its totient is φ = 132716.

The previous prime is 398149. The next prime is 398171. The reversal of 398154 is 451893.

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

398154 is an admirable number.

It is an unprimeable number.

398154 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 in 3 ways as a sum of consecutive naturals, for example, 33174 + ... + 33185.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2³⁹⁸¹⁵⁴ is an apocalyptic number.

398154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398154 is a wasteful number, since it uses less digits than its factorization.

398154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66364.

The product of its digits is 4320, while the sum is 30.

The square root of 398154 is about 630.9944532244. The cubic root of 398154 is about 73.5671097923.

The spelling of 398154 in words is "three hundred ninety-eight thousand, one hundred fifty-four".