398741 has 4 divisors (see below), whose sum is σ = 455712. Its totient is φ = 341772.

The previous prime is 398731. The next prime is 398759. The reversal of 398741 is 147893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 147893 = 71 ⋅2083.

It is a cyclic number.

It is not a de Polignac number, because 398741 - 2¹⁴ = 382357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398698 and 398707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398711) 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, 28475 + ... + 28488.

It is an arithmetic number, because the mean of its divisors is an integer number (113928).

2³⁹⁸⁷⁴¹ is an apocalyptic number.

It is an amenable number.

398741 is a deficient number, since it is larger than the sum of its proper divisors (56971).

398741 is an equidigital number, since it uses as much as digits as its factorization.

398741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56970.

The product of its digits is 6048, while the sum is 32.

The square root of 398741 is about 631.4594207073. The cubic root of 398741 is about 73.6032454657.

The spelling of 398741 in words is "three hundred ninety-eight thousand, seven hundred forty-one".