299961 has 6 divisors (see below), whose sum is σ = 433290. Its totient is φ = 199968.

The previous prime is 299951. The next prime is 299969. The reversal of 299961 is 169992.

It can be written as a sum of positive squares in only one way, i.e., 275625 + 24336 = 525^2 + 156^2 .

It is not a de Polignac number, because 299961 - 2¹⁰ = 298937 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 299961.

It is not an unprimeable number, because it can be changed into a prime (299969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16656 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (72215).

2²⁹⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

299961 is a deficient number, since it is larger than the sum of its proper divisors (133329).

299961 is a wasteful number, since it uses less digits than its factorization.

299961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33335 (or 33332 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 299961 is about 547.6869543818. The cubic root of 299961 is about 66.9403940064.

Subtracting from 299961 its sum of digits (36), we obtain a triangular number (299925 = T₇₇₄).

The spelling of 299961 in words is "two hundred ninety-nine thousand, nine hundred sixty-one".