398383441 has 4 divisors (see below), whose sum is σ = 398522932. Its totient is φ = 398243952.

The previous prime is 398383409. The next prime is 398383471. The reversal of 398383441 is 144383893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259049025 + 139334416 = 16095^2 + 11804^2 .

It is a cyclic number.

It is not a de Polignac number, because 398383441 - 2⁵ = 398383409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398383471) 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, 65370 + ... + 71203.

It is an arithmetic number, because the mean of its divisors is an integer number (99630733).

It is a 2856-hyperperfect number.

Almost surely, 2^398383441 is an apocalyptic number.

It is an amenable number.

398383441 is a deficient number, since it is larger than the sum of its proper divisors (139491).

398383441 is a wasteful number, since it uses less digits than its factorization.

398383441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139490.

The product of its digits is 248832, while the sum is 43.

The square root of 398383441 is about 19959.5451100470. The cubic root of 398383441 is about 735.8123838742.

The spelling of 398383441 in words is "three hundred ninety-eight million, three hundred eighty-three thousand, four hundred forty-one".