398086213 has 4 divisors (see below), whose sum is σ = 454955680. Its totient is φ = 341216748.

The previous prime is 398086189. The next prime is 398086223. The reversal of 398086213 is 312680893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398086213 - 2⁵ = 398086181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398086223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28434723 + ... + 28434736.

It is an arithmetic number, because the mean of its divisors is an integer number (113738920).

Almost surely, 2^398086213 is an apocalyptic number.

It is an amenable number.

398086213 is a deficient number, since it is larger than the sum of its proper divisors (56869467).

398086213 is an equidigital number, since it uses as much as digits as its factorization.

398086213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56869466.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 398086213 is about 19952.0979598638. The cubic root of 398086213 is about 735.6293454295.

The spelling of 398086213 in words is "three hundred ninety-eight million, eighty-six thousand, two hundred thirteen".