212406093 has 12 divisors (see below), whose sum is σ = 307920028. Its totient is φ = 141091200.

The previous prime is 212406071. The next prime is 212406097. The reversal of 212406093 is 390604212.

212406093 is a `hidden beast` number, since 2 + 12 + 40 + 609 + 3 = 666.

212406093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 81486729 + 130919364 = 9027^2 + 11442^2 .

It is not a de Polignac number, because 212406093 - 2¹² = 212401997 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 (212406097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40108 + ... + 45093.

Almost surely, 2^212406093 is an apocalyptic number.

It is an amenable number.

212406093 is a deficient number, since it is larger than the sum of its proper divisors (95513935).

212406093 is a wasteful number, since it uses less digits than its factorization.

212406093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85484 (or 85481 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 212406093 is about 14574.1583976571. The cubic root of 212406093 is about 596.6536799326.

The spelling of 212406093 in words is "two hundred twelve million, four hundred six thousand, ninety-three".