398023803 has 12 divisors (see below), whose sum is σ = 575329248. Its totient is φ = 265161840.

The previous prime is 398023789. The next prime is 398023817. The reversal of 398023803 is 308320893.

It is an interprime number because it is at equal distance from previous prime (398023789) and next prime (398023817).

It is not a de Polignac number, because 398023803 - 2¹⁸ = 397761659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398023903) 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 11 ways as a sum of consecutive naturals, for example, 1488 + ... + 28253.

It is an arithmetic number, because the mean of its divisors is an integer number (47944104).

Almost surely, 2^398023803 is an apocalyptic number.

398023803 is a deficient number, since it is larger than the sum of its proper divisors (177305445).

398023803 is a wasteful number, since it uses less digits than its factorization.

398023803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31234 (or 31231 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 398023803 is about 19950.5339026303. The cubic root of 398023803 is about 735.5909006359.

The spelling of 398023803 in words is "three hundred ninety-eight million, twenty-three thousand, eight hundred three".