216414433 has 4 divisors (see below), whose sum is σ = 218515648. Its totient is φ = 214313220.

The previous prime is 216414409. The next prime is 216414439. The reversal of 216414433 is 334414612.

216414433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216414433 is a prime.

It is a super-2 number, since 2×216414433² = 93670413621422978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216414439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050453 + ... + 1050658.

It is an arithmetic number, because the mean of its divisors is an integer number (54628912).

Almost surely, 2^216414433 is an apocalyptic number.

It is an amenable number.

216414433 is a deficient number, since it is larger than the sum of its proper divisors (2101215).

216414433 is a wasteful number, since it uses less digits than its factorization.

216414433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101214.

The product of its digits is 6912, while the sum is 28.

The square root of 216414433 is about 14711.0309971803. The cubic root of 216414433 is about 600.3834891006.

The spelling of 216414433 in words is "two hundred sixteen million, four hundred fourteen thousand, four hundred thirty-three".