201929 has 12 divisors (see below), whose sum is σ = 253764. Its totient is φ = 159264.

The previous prime is 201923. The next prime is 201937. The reversal of 201929 is 929102.

It can be written as a sum of positive squares in 2 ways, for example, as 19600 + 182329 = 140^2 + 427^2 .

It is not a de Polignac number, because 201929 - 2⁸ = 201673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201923) 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, 479 + ... + 795.

It is an arithmetic number, because the mean of its divisors is an integer number (21147).

2²⁰¹⁹²⁹ is an apocalyptic number.

It is an amenable number.

201929 is a deficient number, since it is larger than the sum of its proper divisors (51835).

201929 is a wasteful number, since it uses less digits than its factorization.

201929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 201929 is about 449.3651076797. The cubic root of 201929 is about 58.6677678570.

It can be divided in two parts, 2019 and 29, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 201929 in words is "two hundred one thousand, nine hundred twenty-nine".