398169 has 8 divisors (see below), whose sum is σ = 589920. Its totient is φ = 265428.

The previous prime is 398149. The next prime is 398171. The reversal of 398169 is 961893.

It is not a de Polignac number, because 398169 - 2¹² = 394073 is a prime.

It is a super-2 number, since 2×398169² = 317077105122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (73740).

2³⁹⁸¹⁶⁹ is an apocalyptic number.

It is an amenable number.

398169 is a deficient number, since it is larger than the sum of its proper divisors (191751).

398169 is a wasteful number, since it uses less digits than its factorization.

398169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14756 (or 14750 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 398169 is about 631.0063391124. The cubic root of 398169 is about 73.5680336332.

The spelling of 398169 in words is "three hundred ninety-eight thousand, one hundred sixty-nine".