398461 has 4 divisors (see below), whose sum is σ = 455392. Its totient is φ = 341532.

The previous prime is 398459. The next prime is 398467. The reversal of 398461 is 164893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398461 - 2¹ = 398459 is a prime.

398461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398467) 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, 28455 + ... + 28468.

It is an arithmetic number, because the mean of its divisors is an integer number (113848).

2³⁹⁸⁴⁶¹ is an apocalyptic number.

It is an amenable number.

398461 is a deficient number, since it is larger than the sum of its proper divisors (56931).

398461 is an equidigital number, since it uses as much as digits as its factorization.

398461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56930.

The product of its digits is 5184, while the sum is 31.

The square root of 398461 is about 631.2376731470. The cubic root of 398461 is about 73.5860131148.

The spelling of 398461 in words is "three hundred ninety-eight thousand, four hundred sixty-one".