905216069 has 8 divisors (see below), whose sum is σ = 953552640. Its totient is φ = 856948896.

The previous prime is 905216009. The next prime is 905216077. The reversal of 905216069 is 960612509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-905216069 is a prime.

It is a super-2 number, since 2×905216069² = 1638832263151625522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905216009) 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 7 ways as a sum of consecutive naturals, for example, 10604 + ... + 43850.

It is an arithmetic number, because the mean of its divisors is an integer number (119194080).

Almost surely, 2^905216069 is an apocalyptic number.

It is an amenable number.

905216069 is a deficient number, since it is larger than the sum of its proper divisors (48336571).

905216069 is a wasteful number, since it uses less digits than its factorization.

905216069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34699.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 905216069 is about 30086.8088869524. The cubic root of 905216069 is about 967.3509999407.

The spelling of 905216069 in words is "nine hundred five million, two hundred sixteen thousand, sixty-nine".