398942208 has 168 divisors, whose sum is σ = 1318765968. Its totient is φ = 113836032.

The previous prime is 398942197. The next prime is 398942209. The reversal of 398942208 is 802249893.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398942209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 515710 + ... + 516482.

Almost surely, 2^398942208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398942208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659382984).

398942208 is an abundant number, since it is smaller than the sum of its proper divisors (919823760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398942208 is an equidigital number, since it uses as much as digits as its factorization.

398942208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 398942208 is about 19973.5376936586. The cubic root of 398942208 is about 736.1562365233.

The spelling of 398942208 in words is "three hundred ninety-eight million, nine hundred forty-two thousand, two hundred eight".