211596993 has 12 divisors (see below), whose sum is σ = 305984640. Its totient is φ = 140905656.

The previous prime is 211596991. The next prime is 211597031. The reversal of 211596993 is 399695112.

It is a happy number.

211596993 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 211596993 - 2¹ = 211596991 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (211596991) 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, 4521 + ... + 21062.

It is an arithmetic number, because the mean of its divisors is an integer number (25498720).

Almost surely, 2^211596993 is an apocalyptic number.

It is an amenable number.

211596993 is a deficient number, since it is larger than the sum of its proper divisors (94387647).

211596993 is a wasteful number, since it uses less digits than its factorization.

211596993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26508 (or 26505 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 211596993 is about 14546.3738780495. The cubic root of 211596993 is about 595.8951223428.

The spelling of 211596993 in words is "two hundred eleven million, five hundred ninety-six thousand, nine hundred ninety-three".