398427 has 8 divisors (see below), whose sum is σ = 540480. Its totient is φ = 261000.

The previous prime is 398423. The next prime is 398441. The reversal of 398427 is 724893.

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

It is not a de Polignac number, because 398427 - 2² = 398423 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398427.

It is not an unprimeable number, because it can be changed into a prime (398423) 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, 949 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (67560).

2³⁹⁸⁴²⁷ is an apocalyptic number.

398427 is a deficient number, since it is larger than the sum of its proper divisors (142053).

398427 is a wasteful number, since it uses less digits than its factorization.

398427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313.

The product of its digits is 12096, while the sum is 33.

The square root of 398427 is about 631.2107413535. The cubic root of 398427 is about 73.5839200654.

The spelling of 398427 in words is "three hundred ninety-eight thousand, four hundred twenty-seven".