398676813 has 16 divisors (see below), whose sum is σ = 546514176. Its totient is φ = 258327360.

The previous prime is 398676793. The next prime is 398676821. The reversal of 398676813 is 318676893.

It is not a de Polignac number, because 398676813 - 2⁵ = 398676781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398676823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192220 + ... + 194282.

It is an arithmetic number, because the mean of its divisors is an integer number (34157136).

Almost surely, 2^398676813 is an apocalyptic number.

It is an amenable number.

398676813 is a deficient number, since it is larger than the sum of its proper divisors (147837363).

398676813 is a wasteful number, since it uses less digits than its factorization.

398676813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844.

The product of its digits is 1306368, while the sum is 51.

The square root of 398676813 is about 19966.8929230364. The cubic root of 398676813 is about 735.9929584678.

The spelling of 398676813 in words is "three hundred ninety-eight million, six hundred seventy-six thousand, eight hundred thirteen".