211742769 has 24 divisors (see below), whose sum is σ = 347740128. Its totient is φ = 113877120.

The previous prime is 211742747. The next prime is 211742771. The reversal of 211742769 is 967247112.

211742769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211742769 - 2¹² = 211738673 is a prime.

It is a super-2 number, since 2×211742769² = 89670000447574722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211742779) 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, 39867 + ... + 44864.

It is an arithmetic number, because the mean of its divisors is an integer number (14489172).

Almost surely, 2^211742769 is an apocalyptic number.

It is an amenable number.

211742769 is a deficient number, since it is larger than the sum of its proper divisors (135997359).

211742769 is a wasteful number, since it uses less digits than its factorization.

211742769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84765 (or 84758 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 211742769 is about 14551.3837486337. The cubic root of 211742769 is about 596.0319347256.

The spelling of 211742769 in words is "two hundred eleven million, seven hundred forty-two thousand, seven hundred sixty-nine".