398226668 has 24 divisors (see below), whose sum is σ = 802274592. Its totient is φ = 169421184.

The previous prime is 398226659. The next prime is 398226677. The reversal of 398226668 is 866622893.

It is an interprime number because it is at equal distance from previous prime (398226659) and next prime (398226677).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48071 + ... + 55742.

It is an arithmetic number, because the mean of its divisors is an integer number (33428108).

Almost surely, 2^398226668 is an apocalyptic number.

It is an amenable number.

398226668 is an abundant number, since it is smaller than the sum of its proper divisors (404047924).

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

398226668 is a wasteful number, since it uses less digits than its factorization.

398226668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103961 (or 103959 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 50.

The square root of 398226668 is about 19955.6174547419. The cubic root of 398226668 is about 735.7158515405.

The spelling of 398226668 in words is "three hundred ninety-eight million, two hundred twenty-six thousand, six hundred sixty-eight".