398453321 has 8 divisors (see below), whose sum is σ = 456047424. Its totient is φ = 341027280.

The previous prime is 398453309. The next prime is 398453329. The reversal of 398453321 is 123354893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398453321 - 2⁶ = 398453257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398453329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36890 + ... + 46451.

It is an arithmetic number, because the mean of its divisors is an integer number (57005928).

Almost surely, 2^398453321 is an apocalyptic number.

It is an amenable number.

398453321 is a deficient number, since it is larger than the sum of its proper divisors (57594103).

398453321 is an equidigital number, since it uses as much as digits as its factorization.

398453321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84031.

The product of its digits is 77760, while the sum is 38.

The square root of 398453321 is about 19961.2955741856. The cubic root of 398453321 is about 735.8554040385.

The spelling of 398453321 in words is "three hundred ninety-eight million, four hundred fifty-three thousand, three hundred twenty-one".