398266814 has 16 divisors (see below), whose sum is σ = 665577216. Its totient is φ = 177178200.

The previous prime is 398266811. The next prime is 398266867. The reversal of 398266814 is 418662893.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398266811) 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, 191552 + ... + 193619.

It is an arithmetic number, because the mean of its divisors is an integer number (41598576).

Almost surely, 2^398266814 is an apocalyptic number.

398266814 is a deficient number, since it is larger than the sum of its proper divisors (267310402).

398266814 is a wasteful number, since it uses less digits than its factorization.

398266814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385231.

The product of its digits is 497664, while the sum is 47.

The square root of 398266814 is about 19956.6233115725. The cubic root of 398266814 is about 735.7405736887.

The spelling of 398266814 in words is "three hundred ninety-eight million, two hundred sixty-six thousand, eight hundred fourteen".