398851982 has 8 divisors (see below), whose sum is σ = 598502496. Its totient is φ = 199351152.

The previous prime is 398851931. The next prime is 398852017. The reversal of 398851982 is 289158893.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30503 + ... + 41570.

It is an arithmetic number, because the mean of its divisors is an integer number (74812812).

Almost surely, 2^398851982 is an apocalyptic number.

398851982 is a deficient number, since it is larger than the sum of its proper divisors (199650514).

398851982 is a wasteful number, since it uses less digits than its factorization.

398851982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74842.

The product of its digits is 1244160, while the sum is 53.

The square root of 398851982 is about 19971.2789274999. The cubic root of 398851982 is about 736.1007352175.

The spelling of 398851982 in words is "three hundred ninety-eight million, eight hundred fifty-one thousand, nine hundred eighty-two".