301994009 has 2 divisors, whose sum is σ = 301994010. Its totient is φ = 301994008.

The previous prime is 301993997. The next prime is 301994029. The reversal of 301994009 is 900499103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165688384 + 136305625 = 12872^2 + 11675^2 .

It is a cyclic number.

It is not a de Polignac number, because 301994009 - 2²⁴ = 285216793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 301994009.

It is not a weakly prime, because it can be changed into another prime (301994029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150997004 + 150997005.

It is an arithmetic number, because the mean of its divisors is an integer number (150997005).

Almost surely, 2^301994009 is an apocalyptic number.

It is an amenable number.

301994009 is a deficient number, since it is larger than the sum of its proper divisors (1).

301994009 is an equidigital number, since it uses as much as digits as its factorization.

301994009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 301994009 is about 17377.9748244725. The cubic root of 301994009 is about 670.9128486827.

The spelling of 301994009 in words is "three hundred one million, nine hundred ninety-four thousand, nine".