699384305 has 4 divisors (see below), whose sum is σ = 839261172. Its totient is φ = 559507440.

The previous prime is 699384251. The next prime is 699384307. The reversal of 699384305 is 503483996.

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 99281296 + 600103009 = 9964^2 + 24497^2 .

It is not a de Polignac number, because 699384305 - 2²⁸ = 430948849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 699384305.

It is not an unprimeable number, because it can be changed into a prime (699384307) 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, 69938426 + ... + 69938435.

It is an arithmetic number, because the mean of its divisors is an integer number (209815293).

Almost surely, 2^699384305 is an apocalyptic number.

It is an amenable number.

699384305 is a deficient number, since it is larger than the sum of its proper divisors (139876867).

699384305 is a wasteful number, since it uses less digits than its factorization.

699384305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139876866.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 699384305 is about 26445.8750091579. The cubic root of 699384305 is about 887.6436024987.

The spelling of 699384305 in words is "six hundred ninety-nine million, three hundred eighty-four thousand, three hundred five".