212438394 has 48 divisors (see below), whose sum is σ = 527654400. Its totient is φ = 60510240.

The previous prime is 212438371. The next prime is 212438407. The reversal of 212438394 is 493834212.

212438394 is a `hidden beast` number, since 21 + 243 + 8 + 394 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41559 + ... + 46389.

It is an arithmetic number, because the mean of its divisors is an integer number (10992800).

Almost surely, 2^212438394 is an apocalyptic number.

212438394 is an abundant number, since it is smaller than the sum of its proper divisors (315216006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212438394 is a wasteful number, since it uses less digits than its factorization.

212438394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195 (or 5192 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 212438394 is about 14575.2665155736. The cubic root of 212438394 is about 596.6839231543.

The spelling of 212438394 in words is "two hundred twelve million, four hundred thirty-eight thousand, three hundred ninety-four".