69469640389 has 4 divisors (see below), whose sum is σ = 71865145260. Its totient is φ = 67074135520.

The previous prime is 69469640341. The next prime is 69469640399. The reversal of 69469640389 is 98304696496.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57208507489 + 12261132900 = 239183^2 + 110730^2 .

It is a cyclic number.

It is not a de Polignac number, because 69469640389 - 2³³ = 60879705797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69469640389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69469640399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1197752392 + ... + 1197752449.

It is an arithmetic number, because the mean of its divisors is an integer number (17966286315).

Almost surely, 2^69469640389 is an apocalyptic number.

It is an amenable number.

69469640389 is a deficient number, since it is larger than the sum of its proper divisors (2395504871).

69469640389 is a wasteful number, since it uses less digits than its factorization.

69469640389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395504870.

The product of its (nonzero) digits is 60466176, while the sum is 64.

The spelling of 69469640389 in words is "sixty-nine billion, four hundred sixty-nine million, six hundred forty thousand, three hundred eighty-nine".