1398430225 has 6 divisors (see below), whose sum is σ = 1734053510. Its totient is φ = 1118744160.

The previous prime is 1398430093. The next prime is 1398430237. The reversal of 1398430225 is 5220348931.

It can be written as a sum of positive squares in 3 ways, for example, as 6170256 + 1392259969 = 2484^2 + 37313^2 .

It is not a de Polignac number, because 1398430225 - 2⁹ = 1398429713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27968580 + ... + 27968629.

Almost surely, 2^1398430225 is an apocalyptic number.

It is an amenable number.

1398430225 is a deficient number, since it is larger than the sum of its proper divisors (335623285).

1398430225 is an equidigital number, since it uses as much as digits as its factorization.

1398430225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55937219 (or 55937214 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1398430225 is about 37395.5909834301. The cubic root of 1398430225 is about 1118.2706690594.

The spelling of 1398430225 in words is "one billion, three hundred ninety-eight million, four hundred thirty thousand, two hundred twenty-five".