398928573 has 12 divisors (see below), whose sum is σ = 576787068. Its totient is φ = 265695360.

The previous prime is 398928557. The next prime is 398928581. The reversal of 398928573 is 375829893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 208571364 + 190357209 = 14442^2 + 13797^2 .

It is not a de Polignac number, because 398928573 - 2⁴ = 398928557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398928473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11340 + ... + 30437.

It is an arithmetic number, because the mean of its divisors is an integer number (48065589).

Almost surely, 2^398928573 is an apocalyptic number.

It is an amenable number.

398928573 is a deficient number, since it is larger than the sum of its proper divisors (177858495).

398928573 is a wasteful number, since it uses less digits than its factorization.

398928573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42844 (or 42841 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 398928573 is about 19973.1963641276. The cubic root of 398928573 is about 736.1478496739.

The spelling of 398928573 in words is "three hundred ninety-eight million, nine hundred twenty-eight thousand, five hundred seventy-three".