201369969 has 24 divisors (see below), whose sum is σ = 302658720. Its totient is φ = 133793856.

The previous prime is 201369943. The next prime is 201370003. The reversal of 201369969 is 969963102.

It is a happy number.

It is not a de Polignac number, because 201369969 - 2⁵ = 201369937 is a prime.

It is a super-2 number, since 2×201369969² = 81099728830121922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201369919) 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, 80662 + ... + 83120.

It is an arithmetic number, because the mean of its divisors is an integer number (12610780).

Almost surely, 2^201369969 is an apocalyptic number.

It is an amenable number.

201369969 is a deficient number, since it is larger than the sum of its proper divisors (101288751).

201369969 is an equidigital number, since it uses as much as digits as its factorization.

201369969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 201369969 is about 14190.4886808031. The cubic root of 201369969 is about 586.1357816106.

The spelling of 201369969 in words is "two hundred one million, three hundred sixty-nine thousand, nine hundred sixty-nine".