398416873 has 4 divisors (see below), whose sum is σ = 398476368. Its totient is φ = 398357380.

The previous prime is 398416861. The next prime is 398416897. The reversal of 398416873 is 378614893.

It is a happy number.

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 398416873 - 2⁵ = 398416841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398416273) 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, 18211 + ... + 33592.

It is an arithmetic number, because the mean of its divisors is an integer number (99619092).

Almost surely, 2^398416873 is an apocalyptic number.

It is an amenable number.

398416873 is a deficient number, since it is larger than the sum of its proper divisors (59495).

398416873 is an equidigital number, since it uses as much as digits as its factorization.

398416873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59494.

The product of its digits is 870912, while the sum is 49.

The square root of 398416873 is about 19960.3825865137. The cubic root of 398416873 is about 735.8329662153.

The spelling of 398416873 in words is "three hundred ninety-eight million, four hundred sixteen thousand, eight hundred seventy-three".