201270969 has 9 divisors (see below), whose sum is σ = 290786223. Its totient is φ = 134152272.

The previous prime is 201270913. The next prime is 201270977. The reversal of 201270969 is 969072102.

The square root of 201270969 is 14187.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4149369 + 197121600 = 2037^2 + 14040^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 201270969 - 2⁹ = 201270457 is a prime.

It is a super-2 number, since 2×201270969² = 81020005924397922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201270989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40197 + ... + 44925.

Almost surely, 2^201270969 is an apocalyptic number.

201270969 is the 14187-th square number.

201270969 is the 7094-th centered octagonal number.

It is an amenable number.

201270969 is a deficient number, since it is larger than the sum of its proper divisors (89515254).

201270969 is an frugal number, since it uses more digits than its factorization.

201270969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464 (or 4732 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The cubic root of 201270969 is about 586.0397114193.

Multiplying 201270969 by its sum of digits (36), we get a square (7245754884 = 85122²).

The spelling of 201270969 in words is "two hundred one million, two hundred seventy thousand, nine hundred sixty-nine".