213934455 has 24 divisors (see below), whose sum is σ = 423794592. Its totient is φ = 97798464.

The previous prime is 213934453. The next prime is 213934489. The reversal of 213934455 is 554439312.

It is not a de Polignac number, because 213934455 - 2¹ = 213934453 is a prime.

It is a super-2 number, since 2×213934455² = 91535902072294050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213934453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339264 + ... + 339893.

It is an arithmetic number, because the mean of its divisors is an integer number (17658108).

Almost surely, 2^213934455 is an apocalyptic number.

213934455 is a deficient number, since it is larger than the sum of its proper divisors (209860137).

213934455 is a wasteful number, since it uses less digits than its factorization.

213934455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679175 (or 679172 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 213934455 is about 14626.4983847810. The cubic root of 213934455 is about 598.0813293784.

The spelling of 213934455 in words is "two hundred thirteen million, nine hundred thirty-four thousand, four hundred fifty-five".