398442203 has 4 divisors (see below), whose sum is σ = 399802368. Its totient is φ = 397082040.

The previous prime is 398442199. The next prime is 398442211. The reversal of 398442203 is 302244893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 398442203 - 2² = 398442199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398442283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679643 + ... + 680228.

It is an arithmetic number, because the mean of its divisors is an integer number (99950592).

Almost surely, 2^398442203 is an apocalyptic number.

398442203 is a deficient number, since it is larger than the sum of its proper divisors (1360165).

398442203 is a wasteful number, since it uses less digits than its factorization.

398442203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360164.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 398442203 is about 19961.0170833051. The cubic root of 398442203 is about 735.8485598102.

The spelling of 398442203 in words is "three hundred ninety-eight million, four hundred forty-two thousand, two hundred three".