398821273 has 8 divisors (see below), whose sum is σ = 409363200. Its totient is φ = 388365120.

The previous prime is 398821249. The next prime is 398821279. The reversal of 398821273 is 372128893.

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 398821273 - 2⁹ = 398820761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398821279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11968 + ... + 30673.

It is an arithmetic number, because the mean of its divisors is an integer number (51170400).

Almost surely, 2^398821273 is an apocalyptic number.

It is an amenable number.

398821273 is a deficient number, since it is larger than the sum of its proper divisors (10541927).

398821273 is a wasteful number, since it uses less digits than its factorization.

398821273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42887.

The product of its digits is 145152, while the sum is 43.

The square root of 398821273 is about 19970.5100836208. The cubic root of 398821273 is about 736.0818430815.

The spelling of 398821273 in words is "three hundred ninety-eight million, eight hundred twenty-one thousand, two hundred seventy-three".