398212934 has 16 divisors (see below), whose sum is σ = 685663488. Its totient is φ = 169909512.

The previous prime is 398212931. The next prime is 398212937. The reversal of 398212934 is 439212893.

It is an interprime number because it is at equal distance from previous prime (398212931) and next prime (398212937).

It is a junction number, because it is equal to n+sod(n) for n = 398212891 and 398212900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398212931) 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, 59474 + ... + 65829.

It is an arithmetic number, because the mean of its divisors is an integer number (42853968).

Almost surely, 2^398212934 is an apocalyptic number.

398212934 is a deficient number, since it is larger than the sum of its proper divisors (287450554).

398212934 is a wasteful number, since it uses less digits than its factorization.

398212934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125539.

The product of its digits is 93312, while the sum is 41.

The square root of 398212934 is about 19955.2733381430. The cubic root of 398212934 is about 735.7073936793.

Subtracting from 398212934 its sum of digits (41), we obtain a palindrome (398212893).

The spelling of 398212934 in words is "three hundred ninety-eight million, two hundred twelve thousand, nine hundred thirty-four".