211440929 has 12 divisors (see below), whose sum is σ = 246319344. Its totient is φ = 180971784.

The previous prime is 211440919. The next prime is 211440937. The reversal of 211440929 is 929044112.

It is not a de Polignac number, because 211440929 - 2⁴ = 211440913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211440895 and 211440904.

It is not an unprimeable number, because it can be changed into a prime (211440919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35822 + ... + 41304.

It is an arithmetic number, because the mean of its divisors is an integer number (20526612).

Almost surely, 2^211440929 is an apocalyptic number.

It is an amenable number.

211440929 is a deficient number, since it is larger than the sum of its proper divisors (34878415).

211440929 is an equidigital number, since it uses as much as digits as its factorization.

211440929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284 (or 6277 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 211440929 is about 14541.0085276091. The cubic root of 211440929 is about 595.7485848960.

The spelling of 211440929 in words is "two hundred eleven million, four hundred forty thousand, nine hundred twenty-nine".