201969469439 has 2 divisors, whose sum is σ = 201969469440. Its totient is φ = 201969469438.

The previous prime is 201969469399. The next prime is 201969469483. The reversal of 201969469439 is 934964969102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201969469439 - 2¹⁶ = 201969403903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201969469139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100984734719 + 100984734720.

It is an arithmetic number, because the mean of its divisors is an integer number (100984734720).

Almost surely, 2^201969469439 is an apocalyptic number.

201969469439 is a deficient number, since it is larger than the sum of its proper divisors (1).

201969469439 is an equidigital number, since it uses as much as digits as its factorization.

201969469439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22674816, while the sum is 62.

The spelling of 201969469439 in words is "two hundred one billion, nine hundred sixty-nine million, four hundred sixty-nine thousand, four hundred thirty-nine".