398845190 has 16 divisors (see below), whose sum is σ = 720265392. Its totient is φ = 159017184.

The previous prime is 398845159. The next prime is 398845199. The reversal of 398845190 is 91548893.

It is a super-2 number, since 2×398845190² = 318154971172272200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398845199) 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, 61889 + ... + 68028.

It is an arithmetic number, because the mean of its divisors is an integer number (45016587).

Almost surely, 2^398845190 is an apocalyptic number.

398845190 is a deficient number, since it is larger than the sum of its proper divisors (321420202).

398845190 is a wasteful number, since it uses less digits than its factorization.

398845190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130231.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 398845190 is about 19971.1088825834. The cubic root of 398845190 is about 736.0965568716.

The spelling of 398845190 in words is "three hundred ninety-eight million, eight hundred forty-five thousand, one hundred ninety".