699447349 has 2 divisors, whose sum is σ = 699447350. Its totient is φ = 699447348.

The previous prime is 699447347. The next prime is 699447421. The reversal of 699447349 is 943744996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 685497124 + 13950225 = 26182^2 + 3735^2 .

It is a cyclic number.

It is not a de Polignac number, because 699447349 - 2¹ = 699447347 is a prime.

Together with 699447347, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 699447349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699447347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349723674 + 349723675.

It is an arithmetic number, because the mean of its divisors is an integer number (349723675).

Almost surely, 2^699447349 is an apocalyptic number.

It is an amenable number.

699447349 is a deficient number, since it is larger than the sum of its proper divisors (1).

699447349 is an equidigital number, since it uses as much as digits as its factorization.

699447349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 55.

The square root of 699447349 is about 26447.0669262208. The cubic root of 699447349 is about 887.6702730628.

The spelling of 699447349 in words is "six hundred ninety-nine million, four hundred forty-seven thousand, three hundred forty-nine".