699308439121 has 4 divisors (see below), whose sum is σ = 704001784500. Its totient is φ = 694615093744.

The previous prime is 699308439119. The next prime is 699308439139. The reversal of 699308439121 is 121934803996.

It is a happy number.

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 294094713025 + 405213726096 = 542305^2 + 636564^2 .

It is a cyclic number.

It is not a de Polignac number, because 699308439121 - 2¹ = 699308439119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699308439191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2346672466 + ... + 2346672763.

It is an arithmetic number, because the mean of its divisors is an integer number (176000446125).

Almost surely, 2^699308439121 is an apocalyptic number.

It is an amenable number.

699308439121 is a deficient number, since it is larger than the sum of its proper divisors (4693345379).

699308439121 is a wasteful number, since it uses less digits than its factorization.

699308439121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693345378.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 699308439121 in words is "six hundred ninety-nine billion, three hundred eight million, four hundred thirty-nine thousand, one hundred twenty-one".