398575849 has 6 divisors (see below), whose sum is σ = 463649514. Its totient is φ = 341636400.

The previous prime is 398575843. The next prime is 398575867. The reversal of 398575849 is 948575893.

It can be written as a sum of positive squares in only one way, i.e., 363588624 + 34987225 = 19068^2 + 5915^2 .

It is not a de Polignac number, because 398575849 - 2³ = 398575841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398575793 and 398575802.

It is not an unprimeable number, because it can be changed into a prime (398575841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4067052 + ... + 4067149.

It is an arithmetic number, because the mean of its divisors is an integer number (77274919).

Almost surely, 2^398575849 is an apocalyptic number.

It is an amenable number.

398575849 is a deficient number, since it is larger than the sum of its proper divisors (65073665).

398575849 is an equidigital number, since it uses as much as digits as its factorization.

398575849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134215 (or 8134208 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The square root of 398575849 is about 19964.3644777388. The cubic root of 398575849 is about 735.9308237057.

It can be divided in two parts, 398575 and 849, that added together give a square (399424 = 632²).

The spelling of 398575849 in words is "three hundred ninety-eight million, five hundred seventy-five thousand, eight hundred forty-nine".