398773 has 4 divisors (see below), whose sum is σ = 400428. Its totient is φ = 397120.

The previous prime is 398771. The next prime is 398813. The reversal of 398773 is 377893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 377893 = 17 ⋅22229.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 161604 = 487^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 398773 - 2¹ = 398771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398771) 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, 388 + ... + 973.

It is an arithmetic number, because the mean of its divisors is an integer number (100107).

2³⁹⁸⁷⁷³ is an apocalyptic number.

It is an amenable number.

398773 is a deficient number, since it is larger than the sum of its proper divisors (1655).

398773 is a wasteful number, since it uses less digits than its factorization.

398773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its digits is 31752, while the sum is 37.

The square root of 398773 is about 631.4847583275. The cubic root of 398773 is about 73.6052143636.

The spelling of 398773 in words is "three hundred ninety-eight thousand, seven hundred seventy-three".