212440473 has 24 divisors (see below), whose sum is σ = 353386176. Its totient is φ = 120463200.

The previous prime is 212440469. The next prime is 212440477. The reversal of 212440473 is 374044212.

212440473 is a `hidden beast` number, since 212 + 440 + 4 + 7 + 3 = 666.

212440473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212440469) and next prime (212440477).

It is not a de Polignac number, because 212440473 - 2² = 212440469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212440477) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4618 + ... + 21123.

It is an arithmetic number, because the mean of its divisors is an integer number (14724424).

Almost surely, 2^212440473 is an apocalyptic number.

It is an amenable number.

212440473 is a deficient number, since it is larger than the sum of its proper divisors (140945703).

212440473 is a wasteful number, since it uses less digits than its factorization.

212440473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25885 (or 25882 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 212440473 is about 14575.3378348497. The cubic root of 212440473 is about 596.6858696038.

Adding to 212440473 its reverse (374044212), we get a palindrome (586484685).

The spelling of 212440473 in words is "two hundred twelve million, four hundred forty thousand, four hundred seventy-three".