398203166 has 8 divisors (see below), whose sum is σ = 602008320. Its totient is φ = 197533728.

The previous prime is 398203123. The next prime is 398203219. The reversal of 398203166 is 661302893.

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

It is a super-2 number, since 2×398203166² = 317131522824847112, which contains 22 as substring.

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, 783611 + ... + 784118.

It is an arithmetic number, because the mean of its divisors is an integer number (75251040).

Almost surely, 2^398203166 is an apocalyptic number.

398203166 is a deficient number, since it is larger than the sum of its proper divisors (203805154).

398203166 is a wasteful number, since it uses less digits than its factorization.

398203166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567858.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 398203166 is about 19955.0285893055. The cubic root of 398203166 is about 735.7013780965.

The spelling of 398203166 in words is "three hundred ninety-eight million, two hundred three thousand, one hundred sixty-six".