69385879 has 2 divisors, whose sum is σ = 69385880. Its totient is φ = 69385878.

The previous prime is 69385867. The next prime is 69385909. The reversal of 69385879 is 97858396.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69385879 - 2⁷ = 69385751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69385819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34692939 + 34692940.

It is an arithmetic number, because the mean of its divisors is an integer number (34692940).

Almost surely, 2^69385879 is an apocalyptic number.

69385879 is a deficient number, since it is larger than the sum of its proper divisors (1).

69385879 is an equidigital number, since it uses as much as digits as its factorization.

69385879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The square root of 69385879 is about 8329.8186654933. The cubic root of 69385879 is about 410.9197653794.

The spelling of 69385879 in words is "sixty-nine million, three hundred eighty-five thousand, eight hundred seventy-nine".