299981069 has 4 divisors (see below), whose sum is σ = 301291260. Its totient is φ = 298670880.

The previous prime is 299981057. The next prime is 299981083. The reversal of 299981069 is 960189992.

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 292068100 + 7912969 = 17090^2 + 2813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-299981069 is a prime.

It is a super-2 number, since 2×299981069² = 179977283516765522, which contains 22 as substring.

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 299981069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299981039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654752 + ... + 655209.

It is an arithmetic number, because the mean of its divisors is an integer number (75322815).

Almost surely, 2^299981069 is an apocalyptic number.

It is an amenable number.

299981069 is a deficient number, since it is larger than the sum of its proper divisors (1310191).

299981069 is a wasteful number, since it uses less digits than its factorization.

299981069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310190.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 299981069 is about 17319.9615761699. The cubic root of 299981069 is about 669.4188686358.

The spelling of 299981069 in words is "two hundred ninety-nine million, nine hundred eighty-one thousand, sixty-nine".