398433229 has 4 divisors (see below), whose sum is σ = 398918176. Its totient is φ = 397948284.

The previous prime is 398433221. The next prime is 398433239. The reversal of 398433229 is 922334893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398433229 - 2³ = 398433221 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 (398433221) 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, 241239 + ... + 242884.

It is an arithmetic number, because the mean of its divisors is an integer number (99729544).

Almost surely, 2^398433229 is an apocalyptic number.

It is an amenable number.

398433229 is a deficient number, since it is larger than the sum of its proper divisors (484947).

398433229 is an equidigital number, since it uses as much as digits as its factorization.

398433229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484946.

The product of its digits is 279936, while the sum is 43.

The square root of 398433229 is about 19960.7922938945. The cubic root of 398433229 is about 735.8430353331.

The spelling of 398433229 in words is "three hundred ninety-eight million, four hundred thirty-three thousand, two hundred twenty-nine".