299381989 has 4 divisors (see below), whose sum is σ = 304456320. Its totient is φ = 294307660.

The previous prime is 299381987. The next prime is 299382011. The reversal of 299381989 is 989183992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 299381989 - 2¹ = 299381987 is a prime.

It is a super-2 number, since 2×299381989² = 179259150675192242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299381983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2537077 + ... + 2537194.

It is an arithmetic number, because the mean of its divisors is an integer number (76114080).

Almost surely, 2^299381989 is an apocalyptic number.

It is an amenable number.

299381989 is a deficient number, since it is larger than the sum of its proper divisors (5074331).

299381989 is an equidigital number, since it uses as much as digits as its factorization.

299381989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5074330.

The product of its digits is 2519424, while the sum is 58.

The square root of 299381989 is about 17302.6584373616. The cubic root of 299381989 is about 668.9729485898.

The spelling of 299381989 in words is "two hundred ninety-nine million, three hundred eighty-one thousand, nine hundred eighty-nine".