299148421 has 18 divisors (see below), whose sum is σ = 356079570. Its totient is φ = 251016480.

The previous prime is 299148401. The next prime is 299148449. The reversal of 299148421 is 124841992.

It can be written as a sum of positive squares in 3 ways, for example, as 8820900 + 290327521 = 2970^2 + 17039^2 .

It is not a de Polignac number, because 299148421 - 2⁵ = 299148389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299148401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13135 + ... + 27763.

Almost surely, 2^299148421 is an apocalyptic number.

It is an amenable number.

299148421 is a deficient number, since it is larger than the sum of its proper divisors (56931149).

299148421 is a wasteful number, since it uses less digits than its factorization.

299148421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14677 (or 14653 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 299148421 is about 17295.9076373575. The cubic root of 299148421 is about 668.7989330835.

The spelling of 299148421 in words is "two hundred ninety-nine million, one hundred forty-eight thousand, four hundred twenty-one".