398274085 has 8 divisors (see below), whose sum is σ = 521377056. Its totient is φ = 289653840.

The previous prime is 398274077. The next prime is 398274101. The reversal of 398274085 is 580472893.

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

It is not a de Polignac number, because 398274085 - 2³ = 398274077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3620619 + ... + 3620728.

It is an arithmetic number, because the mean of its divisors is an integer number (65172132).

Almost surely, 2^398274085 is an apocalyptic number.

It is an amenable number.

398274085 is a deficient number, since it is larger than the sum of its proper divisors (123102971).

398274085 is a wasteful number, since it uses less digits than its factorization.

398274085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241363.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 398274085 is about 19956.8054808379. The cubic root of 398274085 is about 735.7450510365.

The spelling of 398274085 in words is "three hundred ninety-eight million, two hundred seventy-four thousand, eighty-five".