69538769 has 2 divisors, whose sum is σ = 69538770. Its totient is φ = 69538768.

The previous prime is 69538753. The next prime is 69538771. The reversal of 69538769 is 96783596.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42081169 + 27457600 = 6487^2 + 5240^2 .

It is a cyclic number.

It is not a de Polignac number, because 69538769 - 2⁴ = 69538753 is a prime.

It is a super-2 number, since 2×69538769² = 9671280788070722, which contains 22 as substring.

Together with 69538771, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69538769.

It is not a weakly prime, because it can be changed into another prime (69538739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34769384 + 34769385.

It is an arithmetic number, because the mean of its divisors is an integer number (34769385).

Almost surely, 2^69538769 is an apocalyptic number.

It is an amenable number.

69538769 is a deficient number, since it is larger than the sum of its proper divisors (1).

69538769 is an equidigital number, since it uses as much as digits as its factorization.

69538769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 53.

The square root of 69538769 is about 8338.9908861924. The cubic root of 69538769 is about 411.2213610135.

It can be divided in two parts, 69538 and 769, that added together give a palindrome (70307).

The spelling of 69538769 in words is "sixty-nine million, five hundred thirty-eight thousand, seven hundred sixty-nine".