299990146 has 8 divisors (see below), whose sum is σ = 450629244. Its totient is φ = 149780400.

The previous prime is 299990111. The next prime is 299990147. The reversal of 299990146 is 641099992.

It can be written as a sum of positive squares in 2 ways, for example, as 219188025 + 80802121 = 14805^2 + 8989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 299990146.

It is not an unprimeable number, because it can be changed into a prime (299990147) 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, 105585 + ... + 108388.

Almost surely, 2^299990146 is an apocalyptic number.

299990146 is a deficient number, since it is larger than the sum of its proper divisors (150639098).

299990146 is a wasteful number, since it uses less digits than its factorization.

299990146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214676.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 299990146 is about 17320.2236128752. The cubic root of 299990146 is about 669.4256204549.

The spelling of 299990146 in words is "two hundred ninety-nine million, nine hundred ninety thousand, one hundred forty-six".