299775421409 has 2 divisors, whose sum is σ = 299775421410. Its totient is φ = 299775421408.

The previous prime is 299775421397. The next prime is 299775421453. The reversal of 299775421409 is 904124577992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160903672384 + 138871749025 = 401128^2 + 372655^2 .

It is a cyclic number.

It is not a de Polignac number, because 299775421409 - 2¹² = 299775417313 is a prime.

It is not a weakly prime, because it can be changed into another prime (299775421109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149887710704 + 149887710705.

It is an arithmetic number, because the mean of its divisors is an integer number (149887710705).

Almost surely, 2^299775421409 is an apocalyptic number.

It is an amenable number.

299775421409 is a deficient number, since it is larger than the sum of its proper divisors (1).

299775421409 is an equidigital number, since it uses as much as digits as its factorization.

299775421409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 299775421409 in words is "two hundred ninety-nine billion, seven hundred seventy-five million, four hundred twenty-one thousand, four hundred nine".