799800149 has 2 divisors, whose sum is σ = 799800150. Its totient is φ = 799800148.

The previous prime is 799800143. The next prime is 799800179. The reversal of 799800149 is 941008997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 773841124 + 25959025 = 27818^2 + 5095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-799800149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799800143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399900074 + 399900075.

It is an arithmetic number, because the mean of its divisors is an integer number (399900075).

Almost surely, 2^799800149 is an apocalyptic number.

It is an amenable number.

799800149 is a deficient number, since it is larger than the sum of its proper divisors (1).

799800149 is an equidigital number, since it uses as much as digits as its factorization.

799800149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 799800149 is about 28280.7381268594. The cubic root of 799800149 is about 928.2404581038.

The spelling of 799800149 in words is "seven hundred ninety-nine million, eight hundred thousand, one hundred forty-nine".